128962928 has 20 divisors (see below), whose sum is σ = 250063608. Its totient is φ = 64430400.

The previous prime is 128962921. The next prime is 128962931. The reversal of 128962928 is 829269821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128962921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25403 + ... + 30053.

Almost surely, 2^128962928 is an apocalyptic number.

It is an amenable number.

128962928 is a deficient number, since it is larger than the sum of its proper divisors (121100680).

128962928 is a wasteful number, since it uses less digits than its factorization.

128962928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6392 (or 6386 counting only the distinct ones).

The product of its digits is 248832, while the sum is 47.

The square root of 128962928 is about 11356.1845705325. The cubic root of 128962928 is about 505.2290278999.

The spelling of 128962928 in words is "one hundred twenty-eight million, nine hundred sixty-two thousand, nine hundred twenty-eight".