22643764 has 48 divisors (see below), whose sum is σ = 48093696. Its totient is φ = 9187200.

The previous prime is 22643759. The next prime is 22643783. The reversal of 22643764 is 46734622.

It is a zygodrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17094 + ... + 18370.

It is an arithmetic number, because the mean of its divisors is an integer number (1001952).

Almost surely, 2^22643764 is an apocalyptic number.

It is an amenable number.

22643764 is an abundant number, since it is smaller than the sum of its proper divisors (25449932).

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

22643764 is a wasteful number, since it uses less digits than its factorization.

22643764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336 (or 1334 counting only the distinct ones).

The product of its digits is 48384, while the sum is 34.

The square root of 22643764 is about 4758.5464167117. The cubic root of 22643764 is about 282.9108085872.

The spelling of 22643764 in words is "twenty-two million, six hundred forty-three thousand, seven hundred sixty-four".