138072404 has 12 divisors (see below), whose sum is σ = 252132384. Its totient is φ = 66034584.

The previous prime is 138072401. The next prime is 138072421. The reversal of 138072404 is 404270831.

138072404 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138072401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 750302 + ... + 750485.

It is an arithmetic number, because the mean of its divisors is an integer number (21011032).

Almost surely, 2^138072404 is an apocalyptic number.

It is an amenable number.

138072404 is a deficient number, since it is larger than the sum of its proper divisors (114059980).

138072404 is a wasteful number, since it uses less digits than its factorization.

138072404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500814 (or 1500812 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 138072404 is about 11750.4214392506. The cubic root of 138072404 is about 516.8552858787.

The spelling of 138072404 in words is "one hundred thirty-eight million, seventy-two thousand, four hundred four".