138627152 has 20 divisors (see below), whose sum is σ = 269292660. Its totient is φ = 69132288.

The previous prime is 138627121. The next prime is 138627161. The reversal of 138627152 is 251726831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10394176 + 128232976 = 3224^2 + 11324^2 .

It is a super-2 number, since 2×138627152² = 38434974543262208, which contains 22 as substring.

It is a congruent number.

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, 4913 + ... + 17360.

It is an arithmetic number, because the mean of its divisors is an integer number (13464633).

Almost surely, 2^138627152 is an apocalyptic number.

It is an amenable number.

138627152 is a deficient number, since it is larger than the sum of its proper divisors (130665508).

138627152 is a wasteful number, since it uses less digits than its factorization.

138627152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22670 (or 22664 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 138627152 is about 11774.0032274499. The cubic root of 138627152 is about 517.5465688137.

The spelling of 138627152 in words is "one hundred thirty-eight million, six hundred twenty-seven thousand, one hundred fifty-two".