138882015 has 48 divisors (see below), whose sum is σ = 257137920. Its totient is φ = 69189120.

The previous prime is 138881987. The next prime is 138882019. The reversal of 138882015 is 510288831.

It is not a de Polignac number, because 138882015 - 2⁸ = 138881759 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138882019) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38739 + ... + 42171.

It is an arithmetic number, because the mean of its divisors is an integer number (5357040).

Almost surely, 2^138882015 is an apocalyptic number.

138882015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138882015 is a deficient number, since it is larger than the sum of its proper divisors (118255905).

138882015 is a wasteful number, since it uses less digits than its factorization.

138882015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3504 (or 3501 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 138882015 is about 11784.8213817605. The cubic root of 138882015 is about 517.8635406763.

The spelling of 138882015 in words is "one hundred thirty-eight million, eight hundred eighty-two thousand, fifteen".