138202956 has 24 divisors (see below), whose sum is σ = 358304240. Its totient is φ = 46067616.

The previous prime is 138202949. The next prime is 138202969. The reversal of 138202956 is 659202831.

138202956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 138202956.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 639721 + ... + 639936.

Almost surely, 2^138202956 is an apocalyptic number.

It is an amenable number.

138202956 is an abundant number, since it is smaller than the sum of its proper divisors (220101284).

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

138202956 is a wasteful number, since it uses less digits than its factorization.

138202956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279670 (or 1279662 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 138202956 is about 11755.9753317196. The cubic root of 138202956 is about 517.0181357879.

The spelling of 138202956 in words is "one hundred thirty-eight million, two hundred two thousand, nine hundred fifty-six".