138464070 has 16 divisors (see below), whose sum is σ = 332313840. Its totient is φ = 36923744.

The previous prime is 138464063. The next prime is 138464141. The reversal of 138464070 is 70464831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2307705 + ... + 2307764.

It is an arithmetic number, because the mean of its divisors is an integer number (20769615).

Almost surely, 2^138464070 is an apocalyptic number.

138464070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138464070 is an abundant number, since it is smaller than the sum of its proper divisors (193849770).

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

138464070 is a wasteful number, since it uses less digits than its factorization.

138464070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4615479.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 138464070 is about 11767.0756774995. The cubic root of 138464070 is about 517.3435406497.

The spelling of 138464070 in words is "one hundred thirty-eight million, four hundred sixty-four thousand, seventy".