897857320 has 32 divisors (see below), whose sum is σ = 2038066920. Its totient is φ = 355962880.

The previous prime is 897857291. The next prime is 897857321. The reversal of 897857320 is 23758798.

It can be written as a sum of positive squares in 4 ways, for example, as 646888356 + 250968964 = 25434^2 + 15842^2 .

It is a super-2 number, since 2×897857320² = 1612295534155164800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (897857321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94801 + ... + 103840.

Almost surely, 2^897857320 is an apocalyptic number.

It is an amenable number.

897857320 is an abundant number, since it is smaller than the sum of its proper divisors (1140209600).

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

897857320 is a wasteful number, since it uses less digits than its factorization.

897857320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198765 (or 198761 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 49.

The square root of 897857320 is about 29964.2673863387. The cubic root of 897857320 is about 964.7225776846.

The spelling of 897857320 in words is "eight hundred ninety-seven million, eight hundred fifty-seven thousand, three hundred twenty".