16222564 has 12 divisors (see below), whose sum is σ = 28709100. Its totient is φ = 8019968.

The previous prime is 16222553. The next prime is 16222631. The reversal of 16222564 is 46522261.

It can be written as a sum of positive squares in 2 ways, for example, as 9872164 + 6350400 = 3142^2 + 2520^2 .

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, 22429 + ... + 23140.

It is an arithmetic number, because the mean of its divisors is an integer number (2392425).

Almost surely, 2^16222564 is an apocalyptic number.

It is an amenable number.

16222564 is a deficient number, since it is larger than the sum of its proper divisors (12486536).

16222564 is a wasteful number, since it uses less digits than its factorization.

16222564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45662 (or 45660 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 16222564 is about 4027.7244195699. The cubic root of 16222564 is about 253.1472217244.

It can be divided in two parts, 1622 and 2564, that added together give a triangular number (4186 = T₉₁).

The spelling of 16222564 in words is "sixteen million, two hundred twenty-two thousand, five hundred sixty-four".