138789576 has 24 divisors (see below), whose sum is σ = 375888630. Its totient is φ = 46263168.

The previous prime is 138789569. The next prime is 138789583. The reversal of 138789576 is 675987831.

It is an interprime number because it is at equal distance from previous prime (138789569) and next prime (138789583).

It can be written as a sum of positive squares in only one way, i.e., 72692676 + 66096900 = 8526^2 + 8130^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 963745 + ... + 963888.

Almost surely, 2^138789576 is an apocalyptic number.

It is an amenable number.

138789576 is an abundant number, since it is smaller than the sum of its proper divisors (237099054).

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

138789576 is a wasteful number, since it uses less digits than its factorization.

138789576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927645 (or 1927638 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 138789576 is about 11780.8987772580. The cubic root of 138789576 is about 517.7486195984.

The spelling of 138789576 in words is "one hundred thirty-eight million, seven hundred eighty-nine thousand, five hundred seventy-six".