22642369 has 4 divisors (see below), whose sum is σ = 23372800. Its totient is φ = 21911940.

The previous prime is 22642363. The next prime is 22642379. The reversal of 22642369 is 96324622.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96324622 = 2 ⋅48162311.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22642369 is a prime.

It is a super-2 number, since 2×22642369² = 1025353747864322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22642363) 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, 365169 + ... + 365230.

It is an arithmetic number, because the mean of its divisors is an integer number (5843200).

Almost surely, 2^22642369 is an apocalyptic number.

It is an amenable number.

22642369 is a deficient number, since it is larger than the sum of its proper divisors (730431).

22642369 is an equidigital number, since it uses as much as digits as its factorization.

22642369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730430.

The product of its digits is 31104, while the sum is 34.

The square root of 22642369 is about 4758.3998360794. The cubic root of 22642369 is about 282.9049987657.

The spelling of 22642369 in words is "twenty-two million, six hundred forty-two thousand, three hundred sixty-nine".