138522672 has 60 divisors (see below), whose sum is σ = 398164000. Its totient is φ = 44924544.

The previous prime is 138522667. The next prime is 138522689. The reversal of 138522672 is 276225831.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7672 + ... + 18327.

Almost surely, 2^138522672 is an apocalyptic number.

138522672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138522672 is an abundant number, since it is smaller than the sum of its proper divisors (259641328).

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

138522672 is a wasteful number, since it uses less digits than its factorization.

138522672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26050 (or 26041 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 138522672 is about 11769.5654975024. The cubic root of 138522672 is about 517.4165152732.

The spelling of 138522672 in words is "one hundred thirty-eight million, five hundred twenty-two thousand, six hundred seventy-two".