872247864 has 16 divisors (see below), whose sum is σ = 2180619720. Its totient is φ = 290749280.

The previous prime is 872247853. The next prime is 872247881. The reversal of 872247864 is 468742278.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18171807 + ... + 18171854.

Almost surely, 2^872247864 is an apocalyptic number.

It is an amenable number.

872247864 is an abundant number, since it is smaller than the sum of its proper divisors (1308371856).

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

872247864 is a wasteful number, since it uses less digits than its factorization.

872247864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36343670 (or 36343666 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 48.

The square root of 872247864 is about 29533.8426893623. The cubic root of 872247864 is about 955.4617483258.

The spelling of 872247864 in words is "eight hundred seventy-two million, two hundred forty-seven thousand, eight hundred sixty-four".