138713288 has 32 divisors (see below), whose sum is σ = 298546560. Its totient is φ = 59187840.

The previous prime is 138713287. The next prime is 138713321. The reversal of 138713288 is 882317831.

It is not an unprimeable number, because it can be changed into a prime (138713287) 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, 7733 + ... + 18363.

It is an arithmetic number, because the mean of its divisors is an integer number (9329580).

Almost surely, 2^138713288 is an apocalyptic number.

It is an amenable number.

138713288 is an abundant number, since it is smaller than the sum of its proper divisors (159833272).

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

138713288 is a wasteful number, since it uses less digits than its factorization.

138713288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10877 (or 10873 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The square root of 138713288 is about 11777.6605486828. The cubic root of 138713288 is about 517.6537391639.

The spelling of 138713288 in words is "one hundred thirty-eight million, seven hundred thirteen thousand, two hundred eighty-eight".