22286978 has 8 divisors (see below), whose sum is σ = 38206272. Its totient is φ = 9551556.

The previous prime is 22286959. The next prime is 22287049. The reversal of 22286978 is 87968222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 795950 + ... + 795977.

It is an arithmetic number, because the mean of its divisors is an integer number (4775784).

Almost surely, 2^22286978 is an apocalyptic number.

22286978 is a deficient number, since it is larger than the sum of its proper divisors (15919294).

22286978 is a wasteful number, since it uses less digits than its factorization.

22286978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591936.

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

The square root of 22286978 is about 4720.9085989881. The cubic root of 22286978 is about 281.4170426289.

The spelling of 22286978 in words is "twenty-two million, two hundred eighty-six thousand, nine hundred seventy-eight".