138128576 has 14 divisors (see below), whose sum is σ = 274099020. Its totient is φ = 69064256.

The previous prime is 138128531. The next prime is 138128597. The reversal of 138128576 is 675821831.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079066 + ... + 1079193.

Almost surely, 2^138128576 is an apocalyptic number.

138128576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138128576 is a deficient number, since it is larger than the sum of its proper divisors (135970444).

138128576 is an equidigital number, since it uses as much as digits as its factorization.

138128576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2158271 (or 2158261 counting only the distinct ones).

The product of its digits is 80640, while the sum is 41.

The square root of 138128576 is about 11752.8114083397. The cubic root of 138128576 is about 516.9253671260.

The spelling of 138128576 in words is "one hundred thirty-eight million, one hundred twenty-eight thousand, five hundred seventy-six".