22432987 has 2 divisors, whose sum is σ = 22432988. Its totient is φ = 22432986.

The previous prime is 22432967. The next prime is 22432997. The reversal of 22432987 is 78923422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22432987 - 2⁷ = 22432859 is a prime.

It is not a weakly prime, because it can be changed into another prime (22432957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11216493 + 11216494.

It is an arithmetic number, because the mean of its divisors is an integer number (11216494).

Almost surely, 2^22432987 is an apocalyptic number.

22432987 is a deficient number, since it is larger than the sum of its proper divisors (1).

22432987 is an equidigital number, since it uses as much as digits as its factorization.

22432987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 37.

The square root of 22432987 is about 4736.3474323576. The cubic root of 22432987 is about 282.0302559627.

The spelling of 22432987 in words is "twenty-two million, four hundred thirty-two thousand, nine hundred eighty-seven".