138902704 has 30 divisors (see below), whose sum is σ = 281350916. Its totient is φ = 66427680.

The previous prime is 138902693. The next prime is 138902713. The reversal of 138902704 is 407209831.

It is a super-2 number, since 2×138902704² = 38587922357023232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 138902704.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 259 + ... + 16669.

Almost surely, 2^138902704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138902704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140675458).

138902704 is an abundant number, since it is smaller than the sum of its proper divisors (142448212).

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

138902704 is a wasteful number, since it uses less digits than its factorization.

138902704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16465 (or 16436 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 138902704 is about 11785.6991307262. The cubic root of 138902704 is about 517.8892544613.

The spelling of 138902704 in words is "one hundred thirty-eight million, nine hundred two thousand, seven hundred four".