22715616 has 144 divisors (see below), whose sum is σ = 75841920. Its totient is φ = 5886720.

The previous prime is 22715611. The next prime is 22715633. The reversal of 22715616 is 61651722.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22715611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51525 + ... + 51963.

It is an arithmetic number, because the mean of its divisors is an integer number (526680).

Almost surely, 2^22715616 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 22715616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37920960).

22715616 is an abundant number, since it is smaller than the sum of its proper divisors (53126304).

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

22715616 is a wasteful number, since it uses less digits than its factorization.

22715616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477 (or 462 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 22715616 is about 4766.0902215548. The cubic root of 22715616 is about 283.2097318626.

It can be divided in two parts, 2271 and 5616, that added together give a palindrome (7887).

The spelling of 22715616 in words is "twenty-two million, seven hundred fifteen thousand, six hundred sixteen".