22394986 has 4 divisors (see below), whose sum is σ = 33592482. Its totient is φ = 11197492.

The previous prime is 22394971. The next prime is 22394987. The reversal of 22394986 is 68949322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 22268961 + 126025 = 4719^2 + 355^2 .

It is not an unprimeable number, because it can be changed into a prime (22394987) 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 as a sum of consecutive naturals, namely, 5598745 + ... + 5598748.

Almost surely, 2^22394986 is an apocalyptic number.

22394986 is a deficient number, since it is larger than the sum of its proper divisors (11197496).

22394986 is a wasteful number, since it uses less digits than its factorization.

22394986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11197495.

The product of its digits is 186624, while the sum is 43.

The square root of 22394986 is about 4732.3340964053. The cubic root of 22394986 is about 281.8709148822.

It can be divided in two parts, 2239 and 4986, that added together give a square (7225 = 85²).

The spelling of 22394986 in words is "twenty-two million, three hundred ninety-four thousand, nine hundred eighty-six".