138892734 has 24 divisors (see below), whose sum is σ = 302959800. Its totient is φ = 45985968.

The previous prime is 138892729. The next prime is 138892751. The reversal of 138892734 is 437298831.

It is a self number, because there is not a number n which added to its sum of digits gives 138892734.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23212 + ... + 28575.

It is an arithmetic number, because the mean of its divisors is an integer number (12623325).

Almost surely, 2^138892734 is an apocalyptic number.

138892734 is an abundant number, since it is smaller than the sum of its proper divisors (164067066).

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

138892734 is a wasteful number, since it uses less digits than its factorization.

138892734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51944 (or 51941 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 138892734 is about 11785.2761528952. The cubic root of 138892734 is about 517.8768633432.

The spelling of 138892734 in words is "one hundred thirty-eight million, eight hundred ninety-two thousand, seven hundred thirty-four".