22447936 has 56 divisors (see below), whose sum is σ = 51572160. Its totient is φ = 9495552.

The previous prime is 22447933. The next prime is 22447967. The reversal of 22447936 is 63974422.

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 22447895 and 22447904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22447933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39591 + ... + 40153.

Almost surely, 2^22447936 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 22447936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25786080).

22447936 is an abundant number, since it is smaller than the sum of its proper divisors (29124224).

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

22447936 is an equidigital number, since it uses as much as digits as its factorization.

22447936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671 (or 661 counting only the distinct ones).

The product of its digits is 72576, while the sum is 37.

The square root of 22447936 is about 4737.9252843412. The cubic root of 22447936 is about 282.0928889376.

The spelling of 22447936 in words is "twenty-two million, four hundred forty-seven thousand, nine hundred thirty-six".