22631616 has 112 divisors (see below), whose sum is σ = 76078080. Its totient is φ = 6462720.

The previous prime is 22631599. The next prime is 22631617. The reversal of 22631616 is 61613622.

22631616 is a `hidden beast` number, since 22 + 631 + 6 + 1 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (112).

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

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 22631616.

It is not an unprimeable number, because it can be changed into a prime (22631617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11161 + ... + 13031.

Almost surely, 2^22631616 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 22631616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38039040).

22631616 is an abundant number, since it is smaller than the sum of its proper divisors (53446464).

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

22631616 is a wasteful number, since it uses less digits than its factorization.

22631616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899 (or 1883 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 22631616 is about 4757.2698052560. The cubic root of 22631616 is about 282.8602072343.

The spelling of 22631616 in words is "twenty-two million, six hundred thirty-one thousand, six hundred sixteen".