22402404 has 36 divisors (see below), whose sum is σ = 56840784. Its totient is φ = 7439472.

The previous prime is 22402399. The next prime is 22402421. The reversal of 22402404 is 40420422.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10039 + ... + 12065.

Almost surely, 2^22402404 is an apocalyptic number.

It is an amenable number.

22402404 is an abundant number, since it is smaller than the sum of its proper divisors (34438380).

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

22402404 is a wasteful number, since it uses less digits than its factorization.

22402404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344 (or 2339 counting only the distinct ones).

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

The square root of 22402404 is about 4733.1177885195. The cubic root of 22402404 is about 281.9020332708.

Adding to 22402404 its reverse (40420422), we get a palindrome (62822826).

The spelling of 22402404 in words is "twenty-two million, four hundred two thousand, four hundred four".