22400990 has 16 divisors (see below), whose sum is σ = 40472352. Its totient is φ = 8926944.

The previous prime is 22400971. The next prime is 22401017. The reversal of 22400990 is 9900422.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1274 + ... + 6813.

It is an arithmetic number, because the mean of its divisors is an integer number (2529522).

Almost surely, 2^22400990 is an apocalyptic number.

22400990 is a deficient number, since it is larger than the sum of its proper divisors (18071362).

22400990 is a wasteful number, since it uses less digits than its factorization.

22400990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8371.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 22400990 is about 4732.9684131631. The cubic root of 22400990 is about 281.8961020939.

The spelling of 22400990 in words is "twenty-two million, four hundred thousand, nine hundred ninety".