22066816 has 32 divisors (see below), whose sum is σ = 46551780. Its totient is φ = 10383360.

The previous prime is 22066801. The next prime is 22066859. The reversal of 22066816 is 61866022.

It can be written as a sum of positive squares in 2 ways, for example, as 22052416 + 14400 = 4696^2 + 120^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2895 + ... + 7246.

Almost surely, 2^22066816 is an apocalyptic number.

It is an amenable number.

22066816 is an abundant number, since it is smaller than the sum of its proper divisors (24484964).

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

22066816 is a wasteful number, since it uses less digits than its factorization.

22066816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10172 (or 10160 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 22066816 is about 4697.5329695490. The cubic root of 22066816 is about 280.4873146463.

The spelling of 22066816 in words is "twenty-two million, sixty-six thousand, eight hundred sixteen".