138134652 has 24 divisors (see below), whose sum is σ = 323339856. Its totient is φ = 45898368.

The previous prime is 138134651. The next prime is 138134669. The reversal of 138134652 is 256431831.

138134652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×138134652² = 38162364166322208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138134651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14353 + ... + 21960.

It is an arithmetic number, because the mean of its divisors is an integer number (13472494).

Almost surely, 2^138134652 is an apocalyptic number.

138134652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138134652 is an abundant number, since it is smaller than the sum of its proper divisors (185205204).

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

138134652 is a wasteful number, since it uses less digits than its factorization.

138134652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36637 (or 36635 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 138134652 is about 11753.0698968397. The cubic root of 138134652 is about 516.9329465195.

The spelling of 138134652 in words is "one hundred thirty-eight million, one hundred thirty-four thousand, six hundred fifty-two".