22345437 has 4 divisors (see below), whose sum is σ = 29793920. Its totient is φ = 14896956.

The previous prime is 22345403. The next prime is 22345441. The reversal of 22345437 is 73454322.

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 not a de Polignac number, because 22345437 - 2¹⁸ = 22083293 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 (22345487) 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, 3724237 + ... + 3724242.

It is an arithmetic number, because the mean of its divisors is an integer number (7448480).

Almost surely, 2^22345437 is an apocalyptic number.

It is an amenable number.

22345437 is a deficient number, since it is larger than the sum of its proper divisors (7448483).

22345437 is an equidigital number, since it uses as much as digits as its factorization.

22345437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7448482.

The product of its digits is 20160, while the sum is 30.

The square root of 22345437 is about 4727.0960430268. The cubic root of 22345437 is about 281.6628811897.

Adding to 22345437 its reverse (73454322), we get a palindrome (95799759).

The spelling of 22345437 in words is "twenty-two million, three hundred forty-five thousand, four hundred thirty-seven".