138298252 has 24 divisors (see below), whose sum is σ = 250177536. Its totient is φ = 66854928.

The previous prime is 138298231. The next prime is 138298291. The reversal of 138298252 is 252892831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11173 + ... + 20035.

It is an arithmetic number, because the mean of its divisors is an integer number (10424064).

Almost surely, 2^138298252 is an apocalyptic number.

It is an amenable number.

138298252 is a deficient number, since it is larger than the sum of its proper divisors (111879284).

138298252 is a wasteful number, since it uses less digits than its factorization.

138298252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8997 (or 8995 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 138298252 is about 11760.0277210558. The cubic root of 138298252 is about 517.1369427985.

The spelling of 138298252 in words is "one hundred thirty-eight million, two hundred ninety-eight thousand, two hundred fifty-two".