138834744 has 16 divisors (see below), whose sum is σ = 347086920. Its totient is φ = 46278240.

The previous prime is 138834737. The next prime is 138834769. The reversal of 138834744 is 447438831.

It is a super-2 number, since 2×138834744² = 38550172283091072, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 138834696 and 138834705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2892367 + ... + 2892414.

Almost surely, 2^138834744 is an apocalyptic number.

It is an amenable number.

138834744 is an abundant number, since it is smaller than the sum of its proper divisors (208252176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138834744 is a wasteful number, since it uses less digits than its factorization.

138834744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5784790 (or 5784786 counting only the distinct ones).

The product of its digits is 258048, while the sum is 42.

The square root of 138834744 is about 11782.8156227618. The cubic root of 138834744 is about 517.8047792752.

The spelling of 138834744 in words is "one hundred thirty-eight million, eight hundred thirty-four thousand, seven hundred forty-four".