138336715 has 16 divisors (see below), whose sum is σ = 184068576. Its totient is φ = 98956800.

The previous prime is 138336707. The next prime is 138336721. The reversal of 138336715 is 517633831.

It is a happy number.

It is not a de Polignac number, because 138336715 - 2³ = 138336707 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17262 + ... + 23971.

It is an arithmetic number, because the mean of its divisors is an integer number (11504286).

Almost surely, 2^138336715 is an apocalyptic number.

138336715 is a deficient number, since it is larger than the sum of its proper divisors (45731861).

138336715 is a wasteful number, since it uses less digits than its factorization.

138336715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41310.

The product of its digits is 45360, while the sum is 37.

The square root of 138336715 is about 11761.6629351465. The cubic root of 138336715 is about 517.1848797615.

The spelling of 138336715 in words is "one hundred thirty-eight million, three hundred thirty-six thousand, seven hundred fifteen".