138734344 has 32 divisors (see below), whose sum is σ = 310216320. Its totient is φ = 56871936.

The previous prime is 138734339. The next prime is 138734359. The reversal of 138734344 is 443437831.

It is a super-2 number, since 2×138734344² = 38494436410220672, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

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, 52569 + ... + 55144.

It is an arithmetic number, because the mean of its divisors is an integer number (9694260).

Almost surely, 2^138734344 is an apocalyptic number.

138734344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

138734344 is an abundant number, since it is smaller than the sum of its proper divisors (171481976).

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

138734344 is a wasteful number, since it uses less digits than its factorization.

138734344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107749 (or 107745 counting only the distinct ones).

The product of its digits is 96768, while the sum is 37.

The square root of 138734344 is about 11778.5544104529. The cubic root of 138734344 is about 517.6799302756.

The spelling of 138734344 in words is "one hundred thirty-eight million, seven hundred thirty-four thousand, three hundred forty-four".