22697472 has 80 divisors (see below), whose sum is σ = 69138432. Its totient is φ = 6481920.

The previous prime is 22697461. The next prime is 22697483. The reversal of 22697472 is 27479622.

It is an interprime number because it is at equal distance from previous prime (22697461) and next prime (22697483).

It is a self number, because there is not a number n which added to its sum of digits gives 22697472.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9697 + ... + 11807.

Almost surely, 2^22697472 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 22697472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34569216).

22697472 is an abundant number, since it is smaller than the sum of its proper divisors (46440960).

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

22697472 is an equidigital number, since it uses as much as digits as its factorization.

22697472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2139 (or 2123 counting only the distinct ones).

The product of its digits is 84672, while the sum is 39.

The square root of 22697472 is about 4764.1863943385. The cubic root of 22697472 is about 283.1343075947.

The spelling of 22697472 in words is "twenty-two million, six hundred ninety-seven thousand, four hundred seventy-two".