128608372 has 12 divisors (see below), whose sum is σ = 225301860. Its totient is φ = 64236416.

The previous prime is 128608357. The next prime is 128608393. The reversal of 128608372 is 273806821.

It can be written as a sum of positive squares in 2 ways, for example, as 115691536 + 12916836 = 10756^2 + 3594^2 .

It is a super-2 number, since 2×128608372² = 33080226696980768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12547 + ... + 20362.

It is an arithmetic number, because the mean of its divisors is an integer number (18775155).

Almost surely, 2^128608372 is an apocalyptic number.

It is an amenable number.

128608372 is a deficient number, since it is larger than the sum of its proper divisors (96693488).

128608372 is a wasteful number, since it uses less digits than its factorization.

128608372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33890 (or 33888 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 128608372 is about 11340.5631253479. The cubic root of 128608372 is about 504.7655965379.

The spelling of 128608372 in words is "one hundred twenty-eight million, six hundred eight thousand, three hundred seventy-two".