897641928 has 48 divisors (see below), whose sum is σ = 2559070800. Its totient is φ = 283465440.

The previous prime is 897641903. The next prime is 897641951. The reversal of 897641928 is 829146798.

It is a super-2 number, since 2×897641928² = 1611522061807114368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 326718 + ... + 329453.

It is an arithmetic number, because the mean of its divisors is an integer number (53313975).

Almost surely, 2^897641928 is an apocalyptic number.

It is an amenable number.

897641928 is an abundant number, since it is smaller than the sum of its proper divisors (1661428872).

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

897641928 is a wasteful number, since it uses less digits than its factorization.

897641928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656202 (or 656195 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 897641928 is about 29960.6730231482. The cubic root of 897641928 is about 964.6454272884.

The spelling of 897641928 in words is "eight hundred ninety-seven million, six hundred forty-one thousand, nine hundred twenty-eight".