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2881008 = 24361319
BaseRepresentation
bin1010111111010111110000
312102101000000
422333113300
51214143013
6141430000
733326304
oct12772760
95371000
102881008
1116985a9
12b6b300
1379b450
1454dd04
153bd973
hex2bf5f0

2881008 has 140 divisors (see below), whose sum is σ = 9487240. Its totient is φ = 839808.

The previous prime is 2880991. The next prime is 2881009. The reversal of 2881008 is 8001882.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2881009) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 151623 + ... + 151641.

It is an arithmetic number, because the mean of its divisors is an integer number (67766).

22881008 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 2881008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4743620).

2881008 is an abundant number, since it is smaller than the sum of its proper divisors (6606232).

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

2881008 is a wasteful number, since it uses less digits than its factorization.

2881008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58 (or 37 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 2881008 is about 1697.3532337142. The cubic root of 2881008 is about 142.2923290789.

It can be divided in two parts, 288 and 1008, that added together give a 4-th power (1296 = 64).

The spelling of 2881008 in words is "two million, eight hundred eighty-one thousand, eight".

Divisors: 1 2 3 4 6 8 9 12 13 16 18 19 24 26 27 36 38 39 48 52 54 57 72 76 78 81 104 108 114 117 144 152 156 162 171 208 216 228 234 243 247 304 312 324 342 351 432 456 468 486 494 513 624 648 684 702 729 741 912 936 972 988 1026 1053 1296 1368 1404 1458 1482 1539 1872 1944 1976 2052 2106 2223 2736 2808 2916 2964 3078 3159 3888 3952 4104 4212 4446 4617 5616 5832 5928 6156 6318 6669 8208 8424 8892 9234 9477 11664 11856 12312 12636 13338 13851 16848 17784 18468 18954 20007 24624 25272 26676 27702 35568 36936 37908 40014 50544 53352 55404 60021 73872 75816 80028 106704 110808 120042 151632 160056 180063 221616 240084 320112 360126 480168 720252 960336 1440504 2881008