22256916 has 48 divisors (see below), whose sum is σ = 59125248. Its totient is φ = 6450400.

The previous prime is 22256879. The next prime is 22256933. The reversal of 22256916 is 61965222.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 630 + ... + 6701.

It is an arithmetic number, because the mean of its divisors is an integer number (1231776).

Almost surely, 2^22256916 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 22256916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29562624).

22256916 is an abundant number, since it is smaller than the sum of its proper divisors (36868332).

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

22256916 is a wasteful number, since it uses less digits than its factorization.

22256916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7372 (or 7370 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 22256916 is about 4717.7236036038. The cubic root of 22256916 is about 281.2904550202.

The spelling of 22256916 in words is "twenty-two million, two hundred fifty-six thousand, nine hundred sixteen".