22397492 has 48 divisors (see below), whose sum is σ = 44913792. Its totient is φ = 9694080.

The previous prime is 22397491. The next prime is 22397509. The reversal of 22397492 is 29479322.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22397491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72803 + ... + 73109.

It is an arithmetic number, because the mean of its divisors is an integer number (935704).

Almost surely, 2^22397492 is an apocalyptic number.

It is an amenable number.

22397492 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

22397492 is a wasteful number, since it uses less digits than its factorization.

22397492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408 (or 406 counting only the distinct ones).

The product of its digits is 54432, while the sum is 38.

The square root of 22397492 is about 4732.5988632040. The cubic root of 22397492 is about 281.8814282797.

The spelling of 22397492 in words is "twenty-two million, three hundred ninety-seven thousand, four hundred ninety-two".