22198745 has 16 divisors (see below), whose sum is σ = 28217280. Its totient is φ = 16718400.

The previous prime is 22198739. The next prime is 22198747. The reversal of 22198745 is 54789122.

It is not a de Polignac number, because 22198745 - 2⁸ = 22198489 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22198699 and 22198708.

It is not an unprimeable number, because it can be changed into a prime (22198747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16550 + ... + 17840.

It is an arithmetic number, because the mean of its divisors is an integer number (1763580).

Almost surely, 2^22198745 is an apocalyptic number.

It is an amenable number.

22198745 is a deficient number, since it is larger than the sum of its proper divisors (6018535).

22198745 is a wasteful number, since it uses less digits than its factorization.

22198745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496.

The product of its digits is 40320, while the sum is 38.

The square root of 22198745 is about 4711.5544144157. The cubic root of 22198745 is about 281.0451796000.

The spelling of 22198745 in words is "twenty-two million, one hundred ninety-eight thousand, seven hundred forty-five".