897157072 has 30 divisors (see below), whose sum is σ = 2022038178. Its totient is φ = 384495552.

The previous prime is 897157033. The next prime is 897157111. The reversal of 897157072 is 270751798.

It is an interprime number because it is at equal distance from previous prime (897157033) and next prime (897157111).

It can be written as a sum of positive squares in only one way, i.e., 718025616 + 179131456 = 26796^2 + 13384^2 .

It is a super-2 number, since 2×897157072² = 1609781623679226368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 571383 + ... + 572950.

Almost surely, 2^897157072 is an apocalyptic number.

It is an amenable number.

897157072 is an abundant number, since it is smaller than the sum of its proper divisors (1124881106).

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

897157072 is a wasteful number, since it uses less digits than its factorization.

897157072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144355 (or 1144342 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 46.

The square root of 897157072 is about 29952.5803896759. The cubic root of 897157072 is about 964.4717134927.

The spelling of 897157072 in words is "eight hundred ninety-seven million, one hundred fifty-seven thousand, seventy-two".