22389536 has 48 divisors (see below), whose sum is σ = 48009024. Its totient is φ = 10216704.

The previous prime is 22389529. The next prime is 22389539. The reversal of 22389536 is 63598322.

It is a self number, because there is not a number n which added to its sum of digits gives 22389536.

It is not an unprimeable number, because it can be changed into a prime (22389539) 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, 44261 + ... + 44763.

It is an arithmetic number, because the mean of its divisors is an integer number (1000188).

Almost surely, 2^22389536 is an apocalyptic number.

22389536 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22389536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24004512).

22389536 is an abundant number, since it is smaller than the sum of its proper divisors (25619488).

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

22389536 is a wasteful number, since it uses less digits than its factorization.

22389536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633 (or 625 counting only the distinct ones).

The product of its digits is 77760, while the sum is 38.

The square root of 22389536 is about 4731.7582355822. The cubic root of 22389536 is about 281.8480478423.

The spelling of 22389536 in words is "twenty-two million, three hundred eighty-nine thousand, five hundred thirty-six".