138298875 has 64 divisors (see below), whose sum is σ = 270466560. Its totient is φ = 61872000.

The previous prime is 138298871. The next prime is 138298877. The reversal of 138298875 is 578892831.

It is not a de Polignac number, because 138298875 - 2² = 138298871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138298871) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 52336 + ... + 54914.

It is an arithmetic number, because the mean of its divisors is an integer number (4226040).

Almost surely, 2^138298875 is an apocalyptic number.

138298875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138298875 is a deficient number, since it is larger than the sum of its proper divisors (132167685).

138298875 is a wasteful number, since it uses less digits than its factorization.

138298875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621 (or 2611 counting only the distinct ones).

The product of its digits is 967680, while the sum is 51.

The square root of 138298875 is about 11760.0542090587. The cubic root of 138298875 is about 517.1377193227.

The spelling of 138298875 in words is "one hundred thirty-eight million, two hundred ninety-eight thousand, eight hundred seventy-five".