22249990 has 16 divisors (see below), whose sum is σ = 45771552. Its totient is φ = 7628544.

The previous prime is 22249979. The next prime is 22250017. The reversal of 22249990 is 9994222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158859 + ... + 158998.

It is an arithmetic number, because the mean of its divisors is an integer number (2860722).

Almost surely, 2^22249990 is an apocalyptic number.

22249990 is an abundant number, since it is smaller than the sum of its proper divisors (23521562).

22249990 is a wasteful number, since it uses less digits than its factorization.

22249990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317871.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 22249990 is about 4716.9895060303. The cubic root of 22249990 is about 281.2612742806.

The spelling of 22249990 in words is "twenty-two million, two hundred forty-nine thousand, nine hundred ninety".