22304772 has 72 divisors (see below), whose sum is σ = 65537472. Its totient is φ = 6264000.

The previous prime is 22304761. The next prime is 22304783. The reversal of 22304772 is 27740322.

It is an interprime number because it is at equal distance from previous prime (22304761) and next prime (22304783).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14647 + ... + 16097.

Almost surely, 2^22304772 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 22304772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32768736).

22304772 is an abundant number, since it is smaller than the sum of its proper divisors (43232700).

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

22304772 is a wasteful number, since it uses less digits than its factorization.

22304772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529 (or 1524 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 22304772 is about 4722.7928178145. The cubic root of 22304772 is about 281.4919174844.

The spelling of 22304772 in words is "twenty-two million, three hundred four thousand, seven hundred seventy-two".