22308916 has 36 divisors (see below), whose sum is σ = 46488288. Its totient is φ = 9335088.

The previous prime is 22308911. The next prime is 22308929. The reversal of 22308916 is 61980322.

22308916 = 63² + 64² + ... + 406².

It is a super-3 number, since 3×22308916³ (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 (22308911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7105 + ... + 9751.

Almost surely, 2^22308916 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 22308916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23244144).

22308916 is an abundant number, since it is smaller than the sum of its proper divisors (24179372).

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

22308916 is a wasteful number, since it uses less digits than its factorization.

22308916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2708 (or 2699 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 22308916 is about 4723.2315208975. The cubic root of 22308916 is about 281.5093491842.

The spelling of 22308916 in words is "twenty-two million, three hundred eight thousand, nine hundred sixteen".