22356216 has 128 divisors (see below), whose sum is σ = 66528000. Its totient is φ = 6943104.

The previous prime is 22356211. The next prime is 22356263. The reversal of 22356216 is 61265322.

22356216 is a `hidden beast` number, since 2 + 2 + 35 + 621 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (4320) is a multiple of the sum of its prime divisors (160).

It is a self number, because there is not a number n which added to its sum of digits gives 22356216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22356211) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 269311 + ... + 269393.

It is an arithmetic number, because the mean of its divisors is an integer number (519750).

Almost surely, 2^22356216 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 22356216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33264000).

22356216 is an abundant number, since it is smaller than the sum of its proper divisors (44171784).

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

22356216 is a wasteful number, since it uses less digits than its factorization.

22356216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 160 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 22356216 is about 4728.2360347174. The cubic root of 22356216 is about 281.7081634569.

The spelling of 22356216 in words is "twenty-two million, three hundred fifty-six thousand, two hundred sixteen".