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12872335560 = 23357294711243
BaseRepresentation
bin10111111110100000…
…00100000011001000
31020020002120101202220
423333100010003020
5202330304214220
65525150454040
7633663022050
oct137720040310
936202511686
1012872335560
115506109257
1225b2b04320
1312a1ac3306
148a1816560
15505135540
hex2ff4040c8

12872335560 has 256 divisors, whose sum is σ = 46631116800. Its totient is φ = 2780101632.

The previous prime is 12872335471. The next prime is 12872335579. The reversal of 12872335560 is 6553327821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1139299 + ... + 1150541.

It is an arithmetic number, because the mean of its divisors is an integer number (182152800).

Almost surely, 212872335560 is an apocalyptic number.

12872335560 is a gapful number since it is divisible by the number (10) 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 12872335560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23315558400).

12872335560 is an abundant number, since it is smaller than the sum of its proper divisors (33758781240).

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

12872335560 is a wasteful number, since it uses less digits than its factorization.

12872335560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11340 (or 11336 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 12872335560 in words is "twelve billion, eight hundred seventy-two million, three hundred thirty-five thousand, five hundred sixty".