138757824 has 42 divisors (see below), whose sum is σ = 397725900. Its totient is φ = 46252416.

The previous prime is 138757813. The next prime is 138757831. The reversal of 138757824 is 428757831.

It is a self number, because there is not a number n which added to its sum of digits gives 138757824.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119874 + ... + 121025.

Almost surely, 2^138757824 is an apocalyptic number.

It is an amenable number.

138757824 is an abundant number, since it is smaller than the sum of its proper divisors (258968076).

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

138757824 is a wasteful number, since it uses less digits than its factorization.

138757824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240917 (or 240904 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 138757824 is about 11779.5510950121. The cubic root of 138757824 is about 517.7091334245.

The spelling of 138757824 in words is "one hundred thirty-eight million, seven hundred fifty-seven thousand, eight hundred twenty-four".