128772888 has 32 divisors (see below), whose sum is σ = 322292400. Its totient is φ = 42876288.

The previous prime is 128772877. The next prime is 128772893. The reversal of 128772888 is 888277821.

It is a self number, because there is not a number n which added to its sum of digits gives 128772888.

It is a congruent number.

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, 23778 + ... + 28686.

Almost surely, 2^128772888 is an apocalyptic number.

It is an amenable number.

128772888 is an abundant number, since it is smaller than the sum of its proper divisors (193519512).

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

128772888 is a wasteful number, since it uses less digits than its factorization.

128772888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6011 (or 6007 counting only the distinct ones).

The product of its digits is 802816, while the sum is 51.

The square root of 128772888 is about 11347.8142388744. The cubic root of 128772888 is about 504.9807371014.

The spelling of 128772888 in words is "one hundred twenty-eight million, seven hundred seventy-two thousand, eight hundred eighty-eight".