22403224 has 8 divisors (see below), whose sum is σ = 42006060. Its totient is φ = 11201608.

The previous prime is 22403207. The next prime is 22403231. The reversal of 22403224 is 42230422.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1400194 + ... + 1400209.

Almost surely, 2^22403224 is an apocalyptic number.

It is an amenable number.

22403224 is a deficient number, since it is larger than the sum of its proper divisors (19602836).

22403224 is a wasteful number, since it uses less digits than its factorization.

22403224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800409 (or 2800405 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 22403224 is about 4733.2044113898. The cubic root of 22403224 is about 281.9054727357.

Adding to 22403224 its reverse (42230422), we get a palindrome (64633646).

The spelling of 22403224 in words is "twenty-two million, four hundred three thousand, two hundred twenty-four".