22430861 has 2 divisors, whose sum is σ = 22430862. Its totient is φ = 22430860.

The previous prime is 22430857. The next prime is 22430869. The reversal of 22430861 is 16803422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21949225 + 481636 = 4685^2 + 694^2 .

It is a cyclic number.

It is not a de Polignac number, because 22430861 - 2² = 22430857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22430861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22430869) 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, 11215430 + 11215431.

It is an arithmetic number, because the mean of its divisors is an integer number (11215431).

Almost surely, 2^22430861 is an apocalyptic number.

It is an amenable number.

22430861 is a deficient number, since it is larger than the sum of its proper divisors (1).

22430861 is an equidigital number, since it uses as much as digits as its factorization.

22430861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 22430861 is about 4736.1229924908. The cubic root of 22430861 is about 282.0213462372.

The spelling of 22430861 in words is "twenty-two million, four hundred thirty thousand, eight hundred sixty-one".