138407710 has 64 divisors (see below), whose sum is σ = 304570368. Its totient is φ = 44204544.

The previous prime is 138407699. The next prime is 138407741. The reversal of 138407710 is 17704831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126787 + ... + 127873.

It is an arithmetic number, because the mean of its divisors is an integer number (4758912).

Almost surely, 2^138407710 is an apocalyptic number.

138407710 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138407710 is an abundant number, since it is smaller than the sum of its proper divisors (166162658).

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

138407710 is a wasteful number, since it uses less digits than its factorization.

138407710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 138407710 is about 11764.6806161493. The cubic root of 138407710 is about 517.2733384692.

The spelling of 138407710 in words is "one hundred thirty-eight million, four hundred seven thousand, seven hundred ten".