138658282 has 16 divisors (see below), whose sum is σ = 242186112. Its totient is φ = 58303440.

The previous prime is 138658279. The next prime is 138658297. The reversal of 138658282 is 282856831.

It is a super-2 number, since 2×138658282² = 38452238334383048, which contains 22 as substring.

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, 92694 + ... + 94177.

It is an arithmetic number, because the mean of its divisors is an integer number (15136632).

Almost surely, 2^138658282 is an apocalyptic number.

138658282 is a deficient number, since it is larger than the sum of its proper divisors (103527830).

138658282 is a wasteful number, since it uses less digits than its factorization.

138658282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186933.

The product of its digits is 184320, while the sum is 43.

The square root of 138658282 is about 11775.3251335154. The cubic root of 138658282 is about 517.5853058591.

The spelling of 138658282 in words is "one hundred thirty-eight million, six hundred fifty-eight thousand, two hundred eighty-two".