138652472 has 32 divisors (see below), whose sum is σ = 297523200. Its totient is φ = 59340384.

The previous prime is 138652471. The next prime is 138652489. The reversal of 138652472 is 274256831.

It is a happy number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138652471) 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, 56993 + ... + 59375.

It is an arithmetic number, because the mean of its divisors is an integer number (9297600).

Almost surely, 2^138652472 is an apocalyptic number.

It is an amenable number.

138652472 is an abundant number, since it is smaller than the sum of its proper divisors (158870728).

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

138652472 is a wasteful number, since it uses less digits than its factorization.

138652472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3435 (or 3431 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 138652472 is about 11775.0784286135. The cubic root of 138652472 is about 517.5780765455.

The spelling of 138652472 in words is "one hundred thirty-eight million, six hundred fifty-two thousand, four hundred seventy-two".