137978804 has 12 divisors (see below), whose sum is σ = 241913028. Its totient is φ = 68860800.

The previous prime is 137978803. The next prime is 137978821. The reversal of 137978804 is 408879731.

It can be written as a sum of positive squares in 2 ways, for example, as 80066704 + 57912100 = 8948^2 + 7610^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137978803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29717 + ... + 34044.

It is an arithmetic number, because the mean of its divisors is an integer number (20159419).

Almost surely, 2^137978804 is an apocalyptic number.

It is an amenable number.

137978804 is a deficient number, since it is larger than the sum of its proper divisors (103934224).

137978804 is a wasteful number, since it uses less digits than its factorization.

137978804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64306 (or 64304 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 137978804 is about 11746.4379281551. The cubic root of 137978804 is about 516.7384665161.

The spelling of 137978804 in words is "one hundred thirty-seven million, nine hundred seventy-eight thousand, eight hundred four".