138602608 has 20 divisors (see below), whose sum is σ = 268789840. Its totient is φ = 69237504.

The previous prime is 138602573. The next prime is 138602627. The reversal of 138602608 is 806206831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17413 + ... + 24091.

It is an arithmetic number, because the mean of its divisors is an integer number (13439492).

Almost surely, 2^138602608 is an apocalyptic number.

It is an amenable number.

138602608 is a deficient number, since it is larger than the sum of its proper divisors (130187232).

138602608 is a wasteful number, since it uses less digits than its factorization.

138602608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7984 (or 7978 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 138602608 is about 11772.9608850110. The cubic root of 138602608 is about 517.5160230595.

The spelling of 138602608 in words is "one hundred thirty-eight million, six hundred two thousand, six hundred eight".