22287986 has 32 divisors (see below), whose sum is σ = 41565312. Its totient is φ = 8743680.

The previous prime is 22287983. The next prime is 22288001. The reversal of 22287986 is 68978222.

It is not an unprimeable number, because it can be changed into a prime (22287983) 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 in 15 ways as a sum of consecutive naturals, for example, 7541 + ... + 10071.

It is an arithmetic number, because the mean of its divisors is an integer number (1298916).

Almost surely, 2^22287986 is an apocalyptic number.

22287986 is a deficient number, since it is larger than the sum of its proper divisors (19277326).

22287986 is a wasteful number, since it uses less digits than its factorization.

22287986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2594.

The product of its digits is 193536, while the sum is 44.

The square root of 22287986 is about 4721.0153568909. The cubic root of 22287986 is about 281.4212852275.

The spelling of 22287986 in words is "twenty-two million, two hundred eighty-seven thousand, nine hundred eighty-six".