22198345 has 16 divisors (see below), whose sum is σ = 30376080. Its totient is φ = 15427584.

The previous prime is 22198339. The next prime is 22198367. The reversal of 22198345 is 54389122.

It can be written as a sum of positive squares in 8 ways, for example, as 2271049 + 19927296 = 1507^2 + 4464^2 .

It is a cyclic number.

It is not a de Polignac number, because 22198345 - 2⁵ = 22198313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22198345.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8940 + ... + 11149.

It is an arithmetic number, because the mean of its divisors is an integer number (1898505).

Almost surely, 2^22198345 is an apocalyptic number.

It is an amenable number.

22198345 is a deficient number, since it is larger than the sum of its proper divisors (8177735).

22198345 is a wasteful number, since it uses less digits than its factorization.

22198345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20124.

The product of its digits is 17280, while the sum is 34.

The square root of 22198345 is about 4711.5119653886. The cubic root of 22198345 is about 281.0434915354.

The spelling of 22198345 in words is "twenty-two million, one hundred ninety-eight thousand, three hundred forty-five".