128797924 has 6 divisors (see below), whose sum is σ = 225396374. Its totient is φ = 64398960.

The previous prime is 128797909. The next prime is 128797937. The reversal of 128797924 is 429797821.

It can be written as a sum of positive squares in only one way, i.e., 82992100 + 45805824 = 9110^2 + 6768^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16099737 + ... + 16099744.

Almost surely, 2^128797924 is an apocalyptic number.

It is an amenable number.

128797924 is a deficient number, since it is larger than the sum of its proper divisors (96598450).

128797924 is a wasteful number, since it uses less digits than its factorization.

128797924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32199485 (or 32199483 counting only the distinct ones).

The product of its digits is 508032, while the sum is 49.

The square root of 128797924 is about 11348.9173051882. The cubic root of 128797924 is about 505.0134610665.

The spelling of 128797924 in words is "one hundred twenty-eight million, seven hundred ninety-seven thousand, nine hundred twenty-four".