22497407 has 4 divisors (see below), whose sum is σ = 22508640. Its totient is φ = 22486176.

The previous prime is 22497403. The next prime is 22497421. The reversal of 22497407 is 70479422.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22497407 - 2² = 22497403 is a prime.

It is a super-2 number, since 2×22497407² = 1012266643447298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22497401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1703 + ... + 6920.

It is an arithmetic number, because the mean of its divisors is an integer number (5627160).

Almost surely, 2^22497407 is an apocalyptic number.

22497407 is a deficient number, since it is larger than the sum of its proper divisors (11233).

22497407 is an equidigital number, since it uses as much as digits as its factorization.

22497407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11232.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 22497407 is about 4743.1431561782. The cubic root of 22497407 is about 282.2999633302.

The spelling of 22497407 in words is "twenty-two million, four hundred ninety-seven thousand, four hundred seven".