137478928 has 20 divisors (see below), whose sum is σ = 267014160. Its totient is φ = 68572064.

The previous prime is 137478917. The next prime is 137478931. The reversal of 137478928 is 829874731.

137478928 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 3550 + ... + 16957.

It is an arithmetic number, because the mean of its divisors is an integer number (13350708).

Almost surely, 2^137478928 is an apocalyptic number.

It is an amenable number.

137478928 is a deficient number, since it is larger than the sum of its proper divisors (129535232).

137478928 is a wasteful number, since it uses less digits than its factorization.

137478928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20934 (or 20928 counting only the distinct ones).

The product of its digits is 677376, while the sum is 49.

The square root of 137478928 is about 11725.1408520324. The cubic root of 137478928 is about 516.1136900702.

The spelling of 137478928 in words is "one hundred thirty-seven million, four hundred seventy-eight thousand, nine hundred twenty-eight".