128962900 has 36 divisors (see below), whose sum is σ = 305292960. Its totient is φ = 46895200.

The previous prime is 128962879. The next prime is 128962921. The reversal of 128962900 is 9269821.

It is an interprime number because it is at equal distance from previous prime (128962879) and next prime (128962921).

It is a self number, because there is not a number n which added to its sum of digits gives 128962900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57520 + ... + 59719.

It is an arithmetic number, because the mean of its divisors is an integer number (8480360).

Almost surely, 2^128962900 is an apocalyptic number.

128962900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128962900 is an abundant number, since it is smaller than the sum of its proper divisors (176330060).

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

128962900 is a wasteful number, since it uses less digits than its factorization.

128962900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117264 (or 117257 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 128962900 is about 11356.1833377240. The cubic root of 128962900 is about 505.2289913353.

The spelling of 128962900 in words is "one hundred twenty-eight million, nine hundred sixty-two thousand, nine hundred".