897172480 has 44 divisors (see below), whose sum is σ = 2152174860. Its totient is φ = 358866944.

The previous prime is 897172469. The next prime is 897172483. The reversal of 897172480 is 84271798.

It can be written as a sum of positive squares in 2 ways, for example, as 316555264 + 580617216 = 17792^2 + 24096^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 897172480.

It is not an unprimeable number, because it can be changed into a prime (897172483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82495 + ... + 92734.

It is an arithmetic number, because the mean of its divisors is an integer number (48913065).

Almost surely, 2^897172480 is an apocalyptic number.

897172480 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

897172480 is an abundant number, since it is smaller than the sum of its proper divisors (1255002380).

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

897172480 is a wasteful number, since it uses less digits than its factorization.

897172480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175254 (or 175236 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 46.

The square root of 897172480 is about 29952.8375951261. The cubic root of 897172480 is about 964.4772348206.

The spelling of 897172480 in words is "eight hundred ninety-seven million, one hundred seventy-two thousand, four hundred eighty".