138234560 has 28 divisors (see below), whose sum is σ = 329171808. Its totient is φ = 55293696.

The previous prime is 138234541. The next prime is 138234571. The reversal of 138234560 is 65432831.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215672 + ... + 216311.

It is an arithmetic number, because the mean of its divisors is an integer number (11756136).

Almost surely, 2^138234560 is an apocalyptic number.

138234560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138234560 is an abundant number, since it is smaller than the sum of its proper divisors (190937248).

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

138234560 is an equidigital number, since it uses as much as digits as its factorization.

138234560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432000 (or 431990 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 138234560 is about 11757.3194223854. The cubic root of 138234560 is about 517.0575430391.

The spelling of 138234560 in words is "one hundred thirty-eight million, two hundred thirty-four thousand, five hundred sixty".