22047564 has 96 divisors (see below), whose sum is σ = 65028096. Its totient is φ = 5647680.

The previous prime is 22047563. The next prime is 22047583. The reversal of 22047564 is 46574022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22047563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98757 + ... + 98979.

It is an arithmetic number, because the mean of its divisors is an integer number (677376).

Almost surely, 2^22047564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22047564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32514048).

22047564 is an abundant number, since it is smaller than the sum of its proper divisors (42980532).

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

22047564 is a wasteful number, since it uses less digits than its factorization.

22047564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 22047564 is about 4695.4833616998. The cubic root of 22047564 is about 280.4057213477.

The spelling of 22047564 in words is "twenty-two million, forty-seven thousand, five hundred sixty-four".