22396572 has 72 divisors (see below), whose sum is σ = 64471680. Its totient is φ = 6489120.

The previous prime is 22396567. The next prime is 22396589. The reversal of 22396572 is 27569322.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7879 + ... + 10337.

It is an arithmetic number, because the mean of its divisors is an integer number (895440).

Almost surely, 2^22396572 is an apocalyptic number.

22396572 is a gapful number since it is divisible by the number (22) 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 22396572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32235840).

22396572 is an abundant number, since it is smaller than the sum of its proper divisors (42075108).

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

22396572 is a wasteful number, since it uses less digits than its factorization.

22396572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503 (or 2498 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 22396572 is about 4732.5016640251. The cubic root of 22396572 is about 281.8775687037.

The spelling of 22396572 in words is "twenty-two million, three hundred ninety-six thousand, five hundred seventy-two".