22287992 has 16 divisors (see below), whose sum is σ = 42120960. Its totient is φ = 11055744.

The previous prime is 22287983. The next prime is 22288001. The reversal of 22287992 is 29978222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22287983) and next prime (22288001).

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 9953 + ... + 11984.

It is an arithmetic number, because the mean of its divisors is an integer number (2632560).

Almost surely, 2^22287992 is an apocalyptic number.

It is an amenable number.

22287992 is a deficient number, since it is larger than the sum of its proper divisors (19832968).

22287992 is a wasteful number, since it uses less digits than its factorization.

22287992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22070 (or 22066 counting only the distinct ones).

The product of its digits is 72576, while the sum is 41.

The square root of 22287992 is about 4721.0159923474. The cubic root of 22287992 is about 281.4213104807.

The spelling of 22287992 in words is "twenty-two million, two hundred eighty-seven thousand, nine hundred ninety-two".