22004402 has 8 divisors (see below), whose sum is σ = 37721856. Its totient is φ = 9430452.

The previous prime is 22004393. The next prime is 22004419. The reversal of 22004402 is 20440022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (14), and also a Moran number because the ratio is a prime number: 1571743 = 22004402 / (2 + 2 + 0 + 0 + 4 + 4 + 0 + 2).

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 3 ways as a sum of consecutive naturals, for example, 785858 + ... + 785885.

It is an arithmetic number, because the mean of its divisors is an integer number (4715232).

Almost surely, 2^22004402 is an apocalyptic number.

22004402 is a deficient number, since it is larger than the sum of its proper divisors (15717454).

22004402 is a wasteful number, since it uses less digits than its factorization.

22004402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571752.

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

The square root of 22004402 is about 4690.8849911291. The cubic root of 22004402 is about 280.2226205724. Note that the first 3 decimals are identical.

Adding to 22004402 its reverse (20440022), we get a palindrome (42444424).

The spelling of 22004402 in words is "twenty-two million, four thousand, four hundred two".