22372643 has 2 divisors, whose sum is σ = 22372644. Its totient is φ = 22372642.

The previous prime is 22372627. The next prime is 22372667. The reversal of 22372643 is 34627322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22372643 - 2⁴ = 22372627 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (22372043) 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 as a sum of consecutive naturals, namely, 11186321 + 11186322.

It is an arithmetic number, because the mean of its divisors is an integer number (11186322).

Almost surely, 2^22372643 is an apocalyptic number.

22372643 is a deficient number, since it is larger than the sum of its proper divisors (1).

22372643 is an equidigital number, since it uses as much as digits as its factorization.

22372643 is an odious number, because the sum of its binary digits is odd.

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

The square root of 22372643 is about 4729.9728329030. The cubic root of 22372643 is about 281.7771448240. Note that the first 3 decimals are identical.

Adding to 22372643 its reverse (34627322), we get a palindrome (56999965).

The spelling of 22372643 in words is "twenty-two million, three hundred seventy-two thousand, six hundred forty-three".