138801570 has 32 divisors (see below), whose sum is σ = 343872000. Its totient is φ = 35819520.

The previous prime is 138801563. The next prime is 138801587. The reversal of 138801570 is 75108831.

138801570 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 73695 + ... + 75554.

It is an arithmetic number, because the mean of its divisors is an integer number (10746000).

Almost surely, 2^138801570 is an apocalyptic number.

138801570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138801570 is an abundant number, since it is smaller than the sum of its proper divisors (205070430).

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

138801570 is a wasteful number, since it uses less digits than its factorization.

138801570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149290.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 138801570 is about 11781.4078106141. The cubic root of 138801570 is about 517.7635335380.

The spelling of 138801570 in words is "one hundred thirty-eight million, eight hundred one thousand, five hundred seventy".