22404502 has 4 divisors (see below), whose sum is σ = 33606756. Its totient is φ = 11202250.

The previous prime is 22404497. The next prime is 22404523. The reversal of 22404502 is 20540422.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22404502.

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, 5601124 + ... + 5601127.

It is an arithmetic number, because the mean of its divisors is an integer number (8401689).

Almost surely, 2^22404502 is an apocalyptic number.

22404502 is a deficient number, since it is larger than the sum of its proper divisors (11202254).

22404502 is a wasteful number, since it uses less digits than its factorization.

22404502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11202253.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 22404502 is about 4733.3394131416. The cubic root of 22404502 is about 281.9108331002.

Adding to 22404502 its reverse (20540422), we get a palindrome (42944924).

The spelling of 22404502 in words is "twenty-two million, four hundred four thousand, five hundred two".