224021232 has 120 divisors (see below), whose sum is σ = 644870928. Its totient is φ = 72576000.

The previous prime is 224021227. The next prime is 224021243. The reversal of 224021232 is 232120422.

224021232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1061607 + ... + 1061817.

Almost surely, 2^224021232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 224021232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322435464).

224021232 is an abundant number, since it is smaller than the sum of its proper divisors (420849696).

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

224021232 is a wasteful number, since it uses less digits than its factorization.

224021232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 224021232 is about 14967.3388416245. The cubic root of 224021232 is about 607.3369821192.

Adding to 224021232 its reverse (232120422), we get a palindrome (456141654).

The spelling of 224021232 in words is "two hundred twenty-four million, twenty-one thousand, two hundred thirty-two".