22109994 has 12 divisors (see below), whose sum is σ = 47905026. Its totient is φ = 7369992.

The previous prime is 22109993. The next prime is 22110001. The reversal of 22109994 is 49990122.

It can be written as a sum of positive squares in only one way, i.e., 17114769 + 4995225 = 4137^2 + 2235^2 .

It is a super-3 number, since 3×22109994³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (22109993) 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 5 ways as a sum of consecutive naturals, for example, 614149 + ... + 614184.

Almost surely, 2^22109994 is an apocalyptic number.

22109994 is an abundant number, since it is smaller than the sum of its proper divisors (25795032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22109994 is a wasteful number, since it uses less digits than its factorization.

22109994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228341 (or 1228338 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 22109994 is about 4702.1265401943. The cubic root of 22109994 is about 280.6701380427.

The spelling of 22109994 in words is "twenty-two million, one hundred nine thousand, nine hundred ninety-four".