138354292 has 48 divisors (see below), whose sum is σ = 261273600. Its totient is φ = 63953120.

The previous prime is 138354253. The next prime is 138354299. The reversal of 138354292 is 292453831.

It is a super-2 number, since 2×138354292² = 38283820229642528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138354299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385209 + ... + 385567.

It is an arithmetic number, because the mean of its divisors is an integer number (5443200).

Almost surely, 2^138354292 is an apocalyptic number.

It is an amenable number.

138354292 is a deficient number, since it is larger than the sum of its proper divisors (122919308).

138354292 is a wasteful number, since it uses less digits than its factorization.

138354292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516 (or 514 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 138354292 is about 11762.4101271806. The cubic root of 138354292 is about 517.2067832589.

The spelling of 138354292 in words is "one hundred thirty-eight million, three hundred fifty-four thousand, two hundred ninety-two".