22245816 has 32 divisors (see below), whose sum is σ = 55731600. Its totient is φ = 7399680.

The previous prime is 22245803. The next prime is 22245833. The reversal of 22245816 is 61854222.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 19140 + ... + 20268.

Almost surely, 2^22245816 is an apocalyptic number.

It is an amenable number.

22245816 is an abundant number, since it is smaller than the sum of its proper divisors (33485784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22245816 is a wasteful number, since it uses less digits than its factorization.

22245816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1959 (or 1955 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 22245816 is about 4716.5470420637. The cubic root of 22245816 is about 281.2436853891.

The spelling of 22245816 in words is "twenty-two million, two hundred forty-five thousand, eight hundred sixteen".