128924788 has 12 divisors (see below), whose sum is σ = 226267300. Its totient is φ = 64276992.

The previous prime is 128924773. The next prime is 128924801. The reversal of 128924788 is 887429821.

It can be written as a sum of positive squares in 2 ways, for example, as 88322404 + 40602384 = 9398^2 + 6372^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44781 + ... + 47572.

Almost surely, 2^128924788 is an apocalyptic number.

It is an amenable number.

128924788 is a deficient number, since it is larger than the sum of its proper divisors (97342512).

128924788 is a wasteful number, since it uses less digits than its factorization.

128924788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92706 (or 92704 counting only the distinct ones).

The product of its digits is 516096, while the sum is 49.

The square root of 128924788 is about 11354.5051851677. The cubic root of 128924788 is about 505.1792168538.

The spelling of 128924788 in words is "one hundred twenty-eight million, nine hundred twenty-four thousand, seven hundred eighty-eight".