138292268 has 12 divisors (see below), whose sum is σ = 242098920. Its totient is φ = 69121152.

The previous prime is 138292267. The next prime is 138292289. The reversal of 138292268 is 862292831.

It is a super-3 number, since 3×138292268³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (138292267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12380 + ... + 20732.

It is an arithmetic number, because the mean of its divisors is an integer number (20174910).

Almost surely, 2^138292268 is an apocalyptic number.

It is an amenable number.

138292268 is a deficient number, since it is larger than the sum of its proper divisors (103806652).

138292268 is a wasteful number, since it uses less digits than its factorization.

138292268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12496 (or 12494 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The square root of 138292268 is about 11759.7732971346. The cubic root of 138292268 is about 517.1294840585.

The spelling of 138292268 in words is "one hundred thirty-eight million, two hundred ninety-two thousand, two hundred sixty-eight".