138601152 has 56 divisors (see below), whose sum is σ = 407466800. Its totient is φ = 46199808.

The previous prime is 138601117. The next prime is 138601163. The reversal of 138601152 is 251106831.

138601152 is a `hidden beast` number, since 1 + 3 + 8 + 601 + 1 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 38377 + ... + 41832.

Almost surely, 2^138601152 is an apocalyptic number.

138601152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138601152 is an abundant number, since it is smaller than the sum of its proper divisors (268865648).

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

138601152 is an equidigital number, since it uses as much as digits as its factorization.

138601152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80230 (or 80214 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 138601152 is about 11772.8990482379. The cubic root of 138601152 is about 517.5142109099.

Adding to 138601152 its reverse (251106831), we get a palindrome (389707983).

The spelling of 138601152 in words is "one hundred thirty-eight million, six hundred one thousand, one hundred fifty-two".