224521864 has 16 divisors (see below), whose sum is σ = 481118400. Its totient is φ = 96223632.

The previous prime is 224521861. The next prime is 224521897. The reversal of 224521864 is 468125422.

224521864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (224521861) 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, 2004604 + ... + 2004715.

It is an arithmetic number, because the mean of its divisors is an integer number (30069900).

Almost surely, 2^224521864 is an apocalyptic number.

It is an amenable number.

224521864 is an abundant number, since it is smaller than the sum of its proper divisors (256596536).

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

224521864 is a wasteful number, since it uses less digits than its factorization.

224521864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4009332 (or 4009328 counting only the distinct ones).

The product of its digits is 30720, while the sum is 34.

The square root of 224521864 is about 14984.0536571383. The cubic root of 224521864 is about 607.7890614634.

The spelling of 224521864 in words is "two hundred twenty-four million, five hundred twenty-one thousand, eight hundred sixty-four".