22091194 has 16 divisors (see below), whose sum is σ = 35180136. Its totient is φ = 10368000.

The previous prime is 22091191. The next prime is 22091203. The reversal of 22091194 is 49119022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13593969 + 8497225 = 3687^2 + 2915^2 .

It is not an unprimeable number, because it can be changed into a prime (22091191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17794 + ... + 18994.

Almost surely, 2^22091194 is an apocalyptic number.

22091194 is a deficient number, since it is larger than the sum of its proper divisors (13088942).

22091194 is a wasteful number, since it uses less digits than its factorization.

22091194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 22091194 is about 4700.1270195602. The cubic root of 22091194 is about 280.5905647533.

It can be divided in two parts, 2209 and 1194, that added together give a triangular number (3403 = T₈₂).

The spelling of 22091194 in words is "twenty-two million, ninety-one thousand, one hundred ninety-four".