897287420 has 24 divisors (see below), whose sum is σ = 1886073504. Its totient is φ = 358577856.

The previous prime is 897287411. The next prime is 897287459. The reversal of 897287420 is 24782798.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1337 + ... + 42383.

It is an arithmetic number, because the mean of its divisors is an integer number (78586396).

Almost surely, 2^897287420 is an apocalyptic number.

It is an amenable number.

897287420 is an abundant number, since it is smaller than the sum of its proper divisors (988786084).

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

897287420 is a wasteful number, since it uses less digits than its factorization.

897287420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42149 (or 42147 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 897287420 is about 29954.7562166678. The cubic root of 897287420 is about 964.5184206134.

The spelling of 897287420 in words is "eight hundred ninety-seven million, two hundred eighty-seven thousand, four hundred twenty".