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12872536880 = 245722986673
BaseRepresentation
bin10111111110100001…
…10101001100110000
31020020002221121221012
423333100311030300
5202330332140010
65525155050052
7633664521020
oct137720651460
936202847835
1012872536880
115506236535
1225b2ba0928
1312a1b63b38
148a1869a80
15505175005
hex2ff435330

12872536880 has 40 divisors (see below), whose sum is σ = 34204170912. Its totient is φ = 4413441024.

The previous prime is 12872536843. The next prime is 12872536883. The reversal of 12872536880 is 8863527821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (12872536883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11492777 + ... + 11493896.

Almost surely, 212872536880 is an apocalyptic number.

12872536880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12872536880 is an abundant number, since it is smaller than the sum of its proper divisors (21331634032).

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

12872536880 is a wasteful number, since it uses less digits than its factorization.

12872536880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22986693 (or 22986687 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 12872536880 in words is "twelve billion, eight hundred seventy-two million, five hundred thirty-six thousand, eight hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 35 40 56 70 80 112 140 280 560 22986673 45973346 91946692 114933365 160906711 183893384 229866730 321813422 367786768 459733460 643626844 804533555 919466920 1287253688 1609067110 1838933840 2574507376 3218134220 6436268440 12872536880