22430987 has 2 divisors, whose sum is σ = 22430988. Its totient is φ = 22430986.

The previous prime is 22430983. The next prime is 22431047. The reversal of 22430987 is 78903422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22430987 - 2² = 22430983 is a prime.

It is not a weakly prime, because it can be changed into another prime (22430983) 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, 11215493 + 11215494.

It is an arithmetic number, because the mean of its divisors is an integer number (11215494).

Almost surely, 2^22430987 is an apocalyptic number.

22430987 is a deficient number, since it is larger than the sum of its proper divisors (1).

22430987 is an equidigital number, since it uses as much as digits as its factorization.

22430987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 22430987 is about 4736.1362944915. The cubic root of 22430987 is about 282.0218742987.

The spelling of 22430987 in words is "twenty-two million, four hundred thirty thousand, nine hundred eighty-seven".