138174880 has 24 divisors (see below), whose sum is σ = 326438532. Its totient is φ = 55269888.

The previous prime is 138174863. The next prime is 138174893. The reversal of 138174880 is 88471831.

It can be written as a sum of positive squares in 2 ways, for example, as 132434064 + 5740816 = 11508^2 + 2396^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431637 + ... + 431956.

Almost surely, 2^138174880 is an apocalyptic number.

138174880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138174880 is an abundant number, since it is smaller than the sum of its proper divisors (188263652).

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

138174880 is an equidigital number, since it uses as much as digits as its factorization.

138174880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863608 (or 863600 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 138174880 is about 11754.7811549173. The cubic root of 138174880 is about 516.9831225854.

The spelling of 138174880 in words is "one hundred thirty-eight million, one hundred seventy-four thousand, eight hundred eighty".