22564560 has 80 divisors (see below), whose sum is σ = 70531200. Its totient is φ = 5967360.

The previous prime is 22564547. The next prime is 22564573. The reversal of 22564560 is 6546522.

It is an interprime number because it is at equal distance from previous prime (22564547) and next prime (22564573).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 35445 + ... + 36075.

It is an arithmetic number, because the mean of its divisors is an integer number (881640).

Almost surely, 2^22564560 is an apocalyptic number.

22564560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22564560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35265600).

22564560 is an abundant number, since it is smaller than the sum of its proper divisors (47966640).

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

22564560 is a wasteful number, since it uses less digits than its factorization.

22564560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796 (or 790 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 22564560 is about 4750.2168371560. The cubic root of 22564560 is about 282.5805654258.

The spelling of 22564560 in words is "twenty-two million, five hundred sixty-four thousand, five hundred sixty".