22004887 has 2 divisors, whose sum is σ = 22004888. Its totient is φ = 22004886.

The previous prime is 22004849. The next prime is 22004891. The reversal of 22004887 is 78840022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22004887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22004687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11002443 + 11002444.

It is an arithmetic number, because the mean of its divisors is an integer number (11002444).

Almost surely, 2^22004887 is an apocalyptic number.

22004887 is a deficient number, since it is larger than the sum of its proper divisors (1).

22004887 is an equidigital number, since it uses as much as digits as its factorization.

22004887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 22004887 is about 4690.9366868462. The cubic root of 22004887 is about 280.2246793570.

The spelling of 22004887 in words is "twenty-two million, four thousand, eight hundred eighty-seven".