22749056 has 64 divisors (see below), whose sum is σ = 50232960. Its totient is φ = 10176000.

The previous prime is 22749037. The next prime is 22749059. The reversal of 22749056 is 65094722.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×22749056² = 1035039097782272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22749059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150581 + ... + 150731.

It is an arithmetic number, because the mean of its divisors is an integer number (784890).

Almost surely, 2^22749056 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 22749056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25116480).

22749056 is an abundant number, since it is smaller than the sum of its proper divisors (27483904).

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

22749056 is a wasteful number, since it uses less digits than its factorization.

22749056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 22749056 is about 4769.5970479696. The cubic root of 22749056 is about 283.3486361593.

The spelling of 22749056 in words is "twenty-two million, seven hundred forty-nine thousand, fifty-six".