22697224 has 32 divisors (see below), whose sum is σ = 46922400. Its totient is φ = 10206720.

The previous prime is 22697221. The next prime is 22697237. The reversal of 22697224 is 42279622.

22697224 = 268² + 269² + ... + 443².

It is a self number, because there is not a number n which added to its sum of digits gives 22697224.

It is not an unprimeable number, because it can be changed into a prime (22697221) 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, 7207 + ... + 9865.

It is an arithmetic number, because the mean of its divisors is an integer number (1466325).

Almost surely, 2^22697224 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 22697224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23461200).

22697224 is an abundant number, since it is smaller than the sum of its proper divisors (24225176).

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

22697224 is a wasteful number, since it uses less digits than its factorization.

22697224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2773 (or 2769 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 22697224 is about 4764.1603667383. The cubic root of 22697224 is about 283.1332763850.

The spelling of 22697224 in words is "twenty-two million, six hundred ninety-seven thousand, two hundred twenty-four".