22224402 has 16 divisors (see below), whose sum is σ = 49387680. Its totient is φ = 7408116.

The previous prime is 22224401. The next prime is 22224431. The reversal of 22224402 is 20442222.

22224402 is a `hidden beast` number, since 2 + 222 + 440 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (22224401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205728 + ... + 205835.

It is an arithmetic number, because the mean of its divisors is an integer number (3086730).

Almost surely, 2^22224402 is an apocalyptic number.

22224402 is an abundant number, since it is smaller than the sum of its proper divisors (27163278).

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

22224402 is a wasteful number, since it uses less digits than its factorization.

22224402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411574 (or 411568 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 22224402 is about 4714.2764025882. The cubic root of 22224402 is about 281.1534139456.

Adding to 22224402 its reverse (20442222), we get a palindrome (42666624).

The spelling of 22224402 in words is "twenty-two million, two hundred twenty-four thousand, four hundred two".