138948270 has 32 divisors (see below), whose sum is σ = 335331360. Its totient is φ = 36846720.

The previous prime is 138948263. The next prime is 138948307. The reversal of 138948270 is 72849831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7365 + ... + 18224.

It is an arithmetic number, because the mean of its divisors is an integer number (10479105).

Almost surely, 2^138948270 is an apocalyptic number.

138948270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138948270 is an abundant number, since it is smaller than the sum of its proper divisors (196383090).

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

138948270 is a wasteful number, since it uses less digits than its factorization.

138948270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25780.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 138948270 is about 11787.6320777330. The cubic root of 138948270 is about 517.9458781774.

The spelling of 138948270 in words is "one hundred thirty-eight million, nine hundred forty-eight thousand, two hundred seventy".