137388920 has 32 divisors (see below), whose sum is σ = 313366320. Its totient is φ = 54201600.

The previous prime is 137388887. The next prime is 137388961. The reversal of 137388920 is 29883731.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20606 + ... + 26445.

Almost surely, 2^137388920 is an apocalyptic number.

137388920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137388920 is an abundant number, since it is smaller than the sum of its proper divisors (175977400).

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

137388920 is a wasteful number, since it uses less digits than its factorization.

137388920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47135 (or 47131 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 137388920 is about 11721.3019754633. The cubic root of 137388920 is about 516.0010315866.

The spelling of 137388920 in words is "one hundred thirty-seven million, three hundred eighty-eight thousand, nine hundred twenty".