128624560 has 20 divisors (see below), whose sum is σ = 299052288. Its totient is φ = 51449792.

The previous prime is 128624537. The next prime is 128624627. The reversal of 128624560 is 65426821.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 803824 + ... + 803983.

Almost surely, 2^128624560 is an apocalyptic number.

128624560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128624560 is an abundant number, since it is smaller than the sum of its proper divisors (170427728).

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

128624560 is a wasteful number, since it uses less digits than its factorization.

128624560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607820 (or 1607814 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 128624560 is about 11341.2768240617. The cubic root of 128624560 is about 504.7867740153.

The spelling of 128624560 in words is "one hundred twenty-eight million, six hundred twenty-four thousand, five hundred sixty".