137445904 has 40 divisors (see below), whose sum is σ = 271054080. Its totient is φ = 67507968.

The previous prime is 137445881. The next prime is 137445929. The reversal of 137445904 is 409544731.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374329 + ... + 374695.

It is an arithmetic number, because the mean of its divisors is an integer number (6776352).

Almost surely, 2^137445904 is an apocalyptic number.

It is an amenable number.

137445904 is a deficient number, since it is larger than the sum of its proper divisors (133608176).

137445904 is a wasteful number, since it uses less digits than its factorization.

137445904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727 (or 721 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 137445904 is about 11723.7325114487. The cubic root of 137445904 is about 516.0723613040.

It can be divided in two parts, 1374 and 45904, that added together give a triangular number (47278 = T₃₀₇).

The spelling of 137445904 in words is "one hundred thirty-seven million, four hundred forty-five thousand, nine hundred four".