138255676 has 24 divisors (see below), whose sum is σ = 261699984. Its totient is φ = 63530880.

The previous prime is 138255671. The next prime is 138255683. The reversal of 138255676 is 676552831.

It is a super-2 number, since 2×138255676² = 38229263892433952, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138255671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6411 + ... + 17821.

It is an arithmetic number, because the mean of its divisors is an integer number (10904166).

Almost surely, 2^138255676 is an apocalyptic number.

It is an amenable number.

138255676 is a deficient number, since it is larger than the sum of its proper divisors (123444308).

138255676 is a wasteful number, since it uses less digits than its factorization.

138255676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11661 (or 11659 counting only the distinct ones).

The product of its digits is 302400, while the sum is 43.

The square root of 138255676 is about 11758.2173818993. The cubic root of 138255676 is about 517.0838693818.

It can be divided in two parts, 1382556 and 76, that multiplied together give a triangular number (105074256 = T₁₄₄₉₆).

The spelling of 138255676 in words is "one hundred thirty-eight million, two hundred fifty-five thousand, six hundred seventy-six".