Search a number
-
+
28702844060 = 225117915110937
BaseRepresentation
bin11010101110110100…
…101010010010011100
32202002100110112221112
4122232310222102130
5432240412002220
621104053321152
72034166102052
oct325664522234
982070415845
1028702844060
111119a009630
1256906361b8
1329257147c7
1415640681d2
15b2eceb5c5
hex6aed2a49c

28702844060 has 96 divisors (see below), whose sum is σ = 67035064320. Its totient is φ = 10236096000.

The previous prime is 28702844041. The next prime is 28702844063. The reversal of 28702844060 is 6044820782.

It is a junction number, because it is equal to n+sod(n) for n = 28702843999 and 28702844017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28702844063) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2618912 + ... + 2629848.

It is an arithmetic number, because the mean of its divisors is an integer number (698281920).

Almost surely, 228702844060 is an apocalyptic number.

28702844060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28702844060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33517532160).

28702844060 is an abundant number, since it is smaller than the sum of its proper divisors (38332220260).

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

28702844060 is a wasteful number, since it uses less digits than its factorization.

28702844060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11187 (or 11185 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 41.

The spelling of 28702844060 in words is "twenty-eight billion, seven hundred two million, eight hundred forty-four thousand, sixty".

Divisors: 1 2 4 5 10 11 20 22 44 55 79 110 151 158 220 302 316 395 604 755 790 869 1510 1580 1661 1738 3020 3322 3476 4345 6644 8305 8690 10937 11929 16610 17380 21874 23858 33220 43748 47716 54685 59645 109370 119290 120307 131219 218740 238580 240614 262438 481228 524876 601535 656095 864023 1203070 1312190 1651487 1728046 2406140 2624380 3302974 3456092 4320115 6605948 8257435 8640230 9504253 16514870 17280460 18166357 19008506 33029740 36332714 38017012 47521265 72665428 90831785 95042530 130467473 181663570 190085060 260934946 363327140 521869892 652337365 1304674730 1435142203 2609349460 2870284406 5740568812 7175711015 14351422030 28702844060