22292397 has 12 divisors (see below), whose sum is σ = 32986044. Its totient is φ = 14498880.

The previous prime is 22292381. The next prime is 22292399. The reversal of 22292397 is 79329222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9696996 + 12595401 = 3114^2 + 3549^2 .

It is not a de Polignac number, because 22292397 - 2⁴ = 22292381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22292399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29838 + ... + 30575.

It is an arithmetic number, because the mean of its divisors is an integer number (2748837).

Almost surely, 2^22292397 is an apocalyptic number.

It is an amenable number.

22292397 is a deficient number, since it is larger than the sum of its proper divisors (10693647).

22292397 is a wasteful number, since it uses less digits than its factorization.

22292397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60460 (or 60457 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 22292397 is about 4721.4825002323. The cubic root of 22292397 is about 281.4398493006.

The spelling of 22292397 in words is "twenty-two million, two hundred ninety-two thousand, three hundred ninety-seven".