138250752 has 40 divisors (see below), whose sum is σ = 368312736. Its totient is φ = 46083072.

The previous prime is 138250751. The next prime is 138250771. The reversal of 138250752 is 257052831.

It is a super-2 number, since 2×138250752² = 38226540857131008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138250751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43468 + ... + 46539.

Almost surely, 2^138250752 is an apocalyptic number.

138250752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138250752 is an abundant number, since it is smaller than the sum of its proper divisors (230061984).

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

138250752 is an frugal number, since it uses more digits than its factorization.

138250752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90028 (or 90012 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 138250752 is about 11758.0079945542. The cubic root of 138250752 is about 517.0777306315.

The spelling of 138250752 in words is "one hundred thirty-eight million, two hundred fifty thousand, seven hundred fifty-two".