22390747 has 2 divisors, whose sum is σ = 22390748. Its totient is φ = 22390746.

The previous prime is 22390727. The next prime is 22390757. The reversal of 22390747 is 74709322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22390747 - 2⁷ = 22390619 is a prime.

It is not a weakly prime, because it can be changed into another prime (22390727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11195373 + 11195374.

It is an arithmetic number, because the mean of its divisors is an integer number (11195374).

Almost surely, 2^22390747 is an apocalyptic number.

22390747 is a deficient number, since it is larger than the sum of its proper divisors (1).

22390747 is an equidigital number, since it uses as much as digits as its factorization.

22390747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 22390747 is about 4731.8861989697. The cubic root of 22390747 is about 281.8531292611.

The spelling of 22390747 in words is "twenty-two million, three hundred ninety thousand, seven hundred forty-seven".