128557160 has 32 divisors (see below), whose sum is σ = 289585800. Its totient is φ = 51363840.

The previous prime is 128557159. The next prime is 128557193. The reversal of 128557160 is 61755821.

It can be written as a sum of positive squares in 4 ways, for example, as 68989636 + 59567524 = 8306^2 + 7718^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 128557160.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55220 + ... + 57500.

Almost surely, 2^128557160 is an apocalyptic number.

128557160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128557160 is an abundant number, since it is smaller than the sum of its proper divisors (161028640).

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

128557160 is a wasteful number, since it uses less digits than its factorization.

128557160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3701 (or 3697 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 35.

The square root of 128557160 is about 11338.3049879601. The cubic root of 128557160 is about 504.6985882313.

The spelling of 128557160 in words is "one hundred twenty-eight million, five hundred fifty-seven thousand, one hundred sixty".