897153920 has 128 divisors (see below), whose sum is σ = 2445992640. Its totient is φ = 311721984.

The previous prime is 897153899. The next prime is 897153973. The reversal of 897153920 is 29351798.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138269 + ... + 144611.

Almost surely, 2^897153920 is an apocalyptic number.

897153920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 897153920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1222996320).

897153920 is an abundant number, since it is smaller than the sum of its proper divisors (1548838720).

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

897153920 is a wasteful number, since it uses less digits than its factorization.

897153920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6392 (or 6380 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 897153920 is about 29952.5277731279. The cubic root of 897153920 is about 964.4705839921.

The spelling of 897153920 in words is "eight hundred ninety-seven million, one hundred fifty-three thousand, nine hundred twenty".