138271875 has 96 divisors (see below), whose sum is σ = 274982400. Its totient is φ = 61740000.

The previous prime is 138271871. The next prime is 138271877. The reversal of 138271875 is 578172831.

138271875 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 138271875 - 2² = 138271871 is a prime.

It is a super-2 number, since 2×138271875² = 38238222832031250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138271871) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3215604 + ... + 3215646.

It is an arithmetic number, because the mean of its divisors is an integer number (2864400).

Almost surely, 2^138271875 is an apocalyptic number.

138271875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138271875 is a deficient number, since it is larger than the sum of its proper divisors (136710525).

138271875 is an frugal number, since it uses more digits than its factorization.

138271875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 58 counting only the distinct ones).

The product of its digits is 94080, while the sum is 42.

The square root of 138271875 is about 11758.9061991326. The cubic root of 138271875 is about 517.1040636449.

The spelling of 138271875 in words is "one hundred thirty-eight million, two hundred seventy-one thousand, eight hundred seventy-five".