138588802 has 24 divisors (see below), whose sum is σ = 229110588. Its totient is φ = 62826720.

The previous prime is 138588757. The next prime is 138588803. The reversal of 138588802 is 208885831.

It can be written as a sum of positive squares in 2 ways, for example, as 138274081 + 314721 = 11759^2 + 561^2 .

It is not an unprimeable number, because it can be changed into a prime (138588803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157588 + ... + 158464.

Almost surely, 2^138588802 is an apocalyptic number.

138588802 is a deficient number, since it is larger than the sum of its proper divisors (90521786).

138588802 is a wasteful number, since it uses less digits than its factorization.

138588802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554 (or 1543 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 43.

The square root of 138588802 is about 11772.3745268319. The cubic root of 138588802 is about 517.4988394880.

The spelling of 138588802 in words is "one hundred thirty-eight million, five hundred eighty-eight thousand, eight hundred two".