22454987 has 16 divisors (see below), whose sum is σ = 23950080. Its totient is φ = 21027552.

The previous prime is 22454963. The next prime is 22454989. The reversal of 22454987 is 78945422.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22454987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22454989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134378 + ... + 134544.

It is an arithmetic number, because the mean of its divisors is an integer number (1496880).

Almost surely, 2^22454987 is an apocalyptic number.

22454987 is a deficient number, since it is larger than the sum of its proper divisors (1495093).

22454987 is a wasteful number, since it uses less digits than its factorization.

22454987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322.

The product of its digits is 161280, while the sum is 41.

The square root of 22454987 is about 4738.6693279865. The cubic root of 22454987 is about 282.1224214039.

The spelling of 22454987 in words is "twenty-two million, four hundred fifty-four thousand, nine hundred eighty-seven".