138225876 has 48 divisors (see below), whose sum is σ = 329120064. Its totient is φ = 45143296.

The previous prime is 138225863. The next prime is 138225877. The reversal of 138225876 is 678522831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138225877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135946 + ... + 136958.

It is an arithmetic number, because the mean of its divisors is an integer number (6856668).

Almost surely, 2^138225876 is an apocalyptic number.

It is an amenable number.

138225876 is an abundant number, since it is smaller than the sum of its proper divisors (190894188).

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

138225876 is a wasteful number, since it uses less digits than its factorization.

138225876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240 (or 1238 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 138225876 is about 11756.9501147194. The cubic root of 138225876 is about 517.0467154966.

The spelling of 138225876 in words is "one hundred thirty-eight million, two hundred twenty-five thousand, eight hundred seventy-six".