22320056 has 16 divisors (see below), whose sum is σ = 45654840. Its totient is φ = 10145440.

The previous prime is 22320019. The next prime is 22320059. The reversal of 22320056 is 65002322.

It is a happy number.

It is a super-3 number, since 3×22320056³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22320059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126731 + ... + 126906.

Almost surely, 2^22320056 is an apocalyptic number.

It is an amenable number.

22320056 is an abundant number, since it is smaller than the sum of its proper divisors (23334784).

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

22320056 is a wasteful number, since it uses less digits than its factorization.

22320056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253654 (or 253650 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 22320056 is about 4724.4106510760. The cubic root of 22320056 is about 281.5561987981.

Adding to 22320056 its reverse (65002322), we get a palindrome (87322378).

The spelling of 22320056 in words is "twenty-two million, three hundred twenty thousand, fifty-six".