22643896 has 64 divisors (see below), whose sum is σ = 50544000. Its totient is φ = 9394560.

The previous prime is 22643861. The next prime is 22643903. The reversal of 22643896 is 69834622.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 48255 + ... + 48721.

It is an arithmetic number, because the mean of its divisors is an integer number (789750).

Almost surely, 2^22643896 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 22643896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25272000).

22643896 is an abundant number, since it is smaller than the sum of its proper divisors (27900104).

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

22643896 is a wasteful number, since it uses less digits than its factorization.

22643896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532 (or 528 counting only the distinct ones).

The product of its digits is 124416, while the sum is 40.

The square root of 22643896 is about 4758.5602864732. The cubic root of 22643896 is about 282.9113583214.

The spelling of 22643896 in words is "twenty-two million, six hundred forty-three thousand, eight hundred ninety-six".