947797872 has 80 divisors (see below), whose sum is σ = 2962881792. Its totient is φ = 254868480.

The previous prime is 947797871. The next prime is 947797913. The reversal of 947797872 is 278797749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947797871) 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, 77254 + ... + 88677.

Almost surely, 2^947797872 is an apocalyptic number.

It is an amenable number.

947797872 is an abundant number, since it is smaller than the sum of its proper divisors (2015083920).

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

947797872 is a wasteful number, since it uses less digits than its factorization.

947797872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165966 (or 165960 counting only the distinct ones).

The product of its digits is 12446784, while the sum is 60.

The square root of 947797872 is about 30786.3260555721. The cubic root of 947797872 is about 982.2874070777.

The spelling of 947797872 in words is "nine hundred forty-seven million, seven hundred ninety-seven thousand, eight hundred seventy-two".