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2768528412 = 22321383263271
BaseRepresentation
bin1010010100000100…
…0110010000011100
321010221110211000100
42211001012100130
521132220402122
61134415101100
7125415050256
oct24501062034
97127424010
102768528412
1111a0842411
12653211790
1335175b4c0
141c3990cd6
151130beaac
hexa504641c

2768528412 has 144 divisors (see below), whose sum is σ = 7684604928. Its totient is φ = 835297920.

The previous prime is 2768528407. The next prime is 2768528419. The reversal of 2768528412 is 2148258672.

2768528412 is a `hidden beast` number, since 27 + 68 + 528 + 41 + 2 = 666.

Its product of digits (430080) is a multiple of the sum of its prime factors (640).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2768528419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10215837 + ... + 10216107.

It is an arithmetic number, because the mean of its divisors is an integer number (53365312).

Almost surely, 22768528412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2768528412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3842302464).

2768528412 is an abundant number, since it is smaller than the sum of its proper divisors (4916076516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2768528412 is a wasteful number, since it uses less digits than its factorization.

2768528412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640 (or 635 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 2768528412 is about 52616.8073147735. The cubic root of 2768528412 is about 1404.1591304281.

The spelling of 2768528412 in words is "two billion, seven hundred sixty-eight million, five hundred twenty-eight thousand, four hundred twelve".

Divisors: 1 2 3 4 6 9 12 13 18 26 36 39 52 78 83 117 156 166 234 249 263 271 332 468 498 526 542 747 789 813 996 1052 1079 1084 1494 1578 1626 2158 2367 2439 2988 3156 3237 3252 3419 3523 4316 4734 4878 6474 6838 7046 9468 9711 9756 10257 10569 12948 13676 14092 19422 20514 21138 21829 22493 30771 31707 38844 41028 42276 43658 44986 61542 63414 65487 67479 71273 87316 89972 123084 126828 130974 134958 142546 196461 202437 213819 261948 269916 283777 285092 292409 392922 404874 427638 567554 584818 641457 785844 809748 851331 855276 877227 926549 1135108 1169636 1282914 1702662 1754454 1853098 2553993 2565828 2631681 2779647 3405324 3508908 3706196 5107986 5263362 5559294 5915659 8338941 10215972 10526724 11118588 11831318 16677882 17746977 23662636 33355764 35493954 53240931 70987908 76903567 106481862 153807134 212963724 230710701 307614268 461421402 692132103 922842804 1384264206 2768528412