22002404 has 12 divisors (see below), whose sum is σ = 39443628. Its totient is φ = 10732800.

The previous prime is 22002391. The next prime is 22002433. The reversal of 22002404 is 40420022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3062500 + 18939904 = 1750^2 + 4352^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66917 + ... + 67244.

It is an arithmetic number, because the mean of its divisors is an integer number (3286969).

Almost surely, 2^22002404 is an apocalyptic number.

It is an amenable number.

22002404 is a deficient number, since it is larger than the sum of its proper divisors (17441224).

22002404 is a wasteful number, since it uses less digits than its factorization.

22002404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134206 (or 134204 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 22002404 is about 4690.6720200841. The cubic root of 22002404 is about 280.2141389098.

Adding to 22002404 its reverse (40420022), we get a palindrome (62422426).

The spelling of 22002404 in words is "twenty-two million, two thousand, four hundred four".