22423637 has 4 divisors (see below), whose sum is σ = 22476096. Its totient is φ = 22371180.

The previous prime is 22423613. The next prime is 22423649. The reversal of 22423637 is 73632422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22423637 - 2²⁰ = 21375061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22423657) 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 3 ways as a sum of consecutive naturals, for example, 25583 + ... + 26444.

It is an arithmetic number, because the mean of its divisors is an integer number (5619024).

Almost surely, 2^22423637 is an apocalyptic number.

It is an amenable number.

22423637 is a deficient number, since it is larger than the sum of its proper divisors (52459).

22423637 is an equidigital number, since it uses as much as digits as its factorization.

22423637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52458.

The product of its digits is 12096, while the sum is 29.

The square root of 22423637 is about 4735.3602819638. The cubic root of 22423637 is about 281.9910674031.

The spelling of 22423637 in words is "twenty-two million, four hundred twenty-three thousand, six hundred thirty-seven".