22194745 has 4 divisors (see below), whose sum is σ = 26633700. Its totient is φ = 17755792.

The previous prime is 22194737. The next prime is 22194761. The reversal of 22194745 is 54749122.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13778944 + 8415801 = 3712^2 + 2901^2 .

It is a cyclic number.

It is not a de Polignac number, because 22194745 - 2³ = 22194737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22194745.

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, 2219470 + ... + 2219479.

It is an arithmetic number, because the mean of its divisors is an integer number (6658425).

Almost surely, 2^22194745 is an apocalyptic number.

It is an amenable number.

22194745 is a deficient number, since it is larger than the sum of its proper divisors (4438955).

22194745 is an equidigital number, since it uses as much as digits as its factorization.

22194745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4438954.

The product of its digits is 20160, while the sum is 34.

The square root of 22194745 is about 4711.1299069332. The cubic root of 22194745 is about 281.0282980413.

The spelling of 22194745 in words is "twenty-two million, one hundred ninety-four thousand, seven hundred forty-five".