897631392 has 72 divisors (see below), whose sum is σ = 2740995936. Its totient is φ = 256464768.

The previous prime is 897631367. The next prime is 897631393. The reversal of 897631392 is 293136798.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (897631393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90708 + ... + 100115.

It is an arithmetic number, because the mean of its divisors is an integer number (38069388).

Almost surely, 2^897631392 is an apocalyptic number.

It is an amenable number.

897631392 is an abundant number, since it is smaller than the sum of its proper divisors (1843364544).

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

897631392 is a wasteful number, since it uses less digits than its factorization.

897631392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190850 (or 190835 counting only the distinct ones).

The product of its digits is 489888, while the sum is 48.

The square root of 897631392 is about 29960.4971921362. The cubic root of 897631392 is about 964.6416531242.

The spelling of 897631392 in words is "eight hundred ninety-seven million, six hundred thirty-one thousand, three hundred ninety-two".