128975300 has 18 divisors (see below), whose sum is σ = 279876618. Its totient is φ = 51590080.

The previous prime is 128975293. The next prime is 128975333. The reversal of 128975300 is 3579821.

It can be written as a sum of positive squares in 3 ways, for example, as 1420864 + 127554436 = 1192^2 + 11294^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 644777 + ... + 644976.

It is an arithmetic number, because the mean of its divisors is an integer number (15548701).

Almost surely, 2^128975300 is an apocalyptic number.

128975300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128975300 is an abundant number, since it is smaller than the sum of its proper divisors (150901318).

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

128975300 is a wasteful number, since it uses less digits than its factorization.

128975300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289767 (or 1289760 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 128975300 is about 11356.7292826764. The cubic root of 128975300 is about 505.2451836891.

The spelling of 128975300 in words is "one hundred twenty-eight million, nine hundred seventy-five thousand, three hundred".