128792660 has 24 divisors (see below), whose sum is σ = 270781056. Its totient is φ = 51456800.

The previous prime is 128792563. The next prime is 128792669. The reversal of 128792660 is 66297821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128792669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16385 + ... + 22935.

It is an arithmetic number, because the mean of its divisors is an integer number (11282544).

Almost surely, 2^128792660 is an apocalyptic number.

128792660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128792660 is an abundant number, since it is smaller than the sum of its proper divisors (141988396).

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

128792660 is a wasteful number, since it uses less digits than its factorization.

128792660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7543 (or 7541 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 128792660 is about 11348.6853864225. The cubic root of 128792660 is about 505.0065809684.

The spelling of 128792660 in words is "one hundred twenty-eight million, seven hundred ninety-two thousand, six hundred sixty".