137428168 has 16 divisors (see below), whose sum is σ = 261308160. Its totient is φ = 67746000.

The previous prime is 137428139. The next prime is 137428171. The reversal of 137428168 is 861824731.

It is a self number, because there is not a number n which added to its sum of digits gives 137428168.

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, 120408 + ... + 121543.

It is an arithmetic number, because the mean of its divisors is an integer number (16331760).

Almost surely, 2^137428168 is an apocalyptic number.

It is an amenable number.

137428168 is a deficient number, since it is larger than the sum of its proper divisors (123879992).

137428168 is a wasteful number, since it uses less digits than its factorization.

137428168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242028 (or 242024 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 137428168 is about 11722.9760726532. The cubic root of 137428168 is about 516.0501623809.

The spelling of 137428168 in words is "one hundred thirty-seven million, four hundred twenty-eight thousand, one hundred sixty-eight".