22553916 has 108 divisors (see below), whose sum is σ = 67501224. Its totient is φ = 5839680.

The previous prime is 22553897. The next prime is 22553933. The reversal of 22553916 is 61935522.

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

Its product of digits (16200) is a multiple of the sum of its prime factors (360).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 70990 + ... + 71306.

Almost surely, 2^22553916 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 22553916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33750612).

22553916 is an abundant number, since it is smaller than the sum of its proper divisors (44947308).

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

22553916 is a wasteful number, since it uses less digits than its factorization.

22553916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 340 counting only the distinct ones).

The product of its digits is 16200, while the sum is 33.

The square root of 22553916 is about 4749.0963350937. The cubic root of 22553916 is about 282.5361261133.

The spelling of 22553916 in words is "twenty-two million, five hundred fifty-three thousand, nine hundred sixteen".