128900680 has 32 divisors (see below), whose sum is σ = 290543040. Its totient is φ = 51468480.

The previous prime is 128900659. The next prime is 128900701. The reversal of 128900680 is 86009821.

It is an interprime number because it is at equal distance from previous prime (128900659) and next prime (128900701).

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

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, 22687 + ... + 27793.

It is an arithmetic number, because the mean of its divisors is an integer number (9079470).

Almost surely, 2^128900680 is an apocalyptic number.

128900680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128900680 is an abundant number, since it is smaller than the sum of its proper divisors (161642360).

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

128900680 is a wasteful number, since it uses less digits than its factorization.

128900680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5749 (or 5745 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 128900680 is about 11353.4435304889. The cubic root of 128900680 is about 505.1477266081.

The spelling of 128900680 in words is "one hundred twenty-eight million, nine hundred thousand, six hundred eighty".