22289736 has 64 divisors (see below), whose sum is σ = 67046400. Its totient is φ = 6032448.

The previous prime is 22289731. The next prime is 22289749. The reversal of 22289736 is 63798222.

It is a junction number, because it is equal to n+sod(n) for n = 22289694 and 22289703.

It is not an unprimeable number, because it can be changed into a prime (22289731) 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, 300 + ... + 6683.

It is an arithmetic number, because the mean of its divisors is an integer number (1047600).

Almost surely, 2^22289736 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 22289736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33523200).

22289736 is an abundant number, since it is smaller than the sum of its proper divisors (44756664).

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

22289736 is a wasteful number, since it uses less digits than its factorization.

22289736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7018 (or 7014 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 22289736 is about 4721.2006947386. The cubic root of 22289736 is about 281.4286505462.

The spelling of 22289736 in words is "twenty-two million, two hundred eighty-nine thousand, seven hundred thirty-six".