22198306 has 16 divisors (see below), whose sum is σ = 36396864. Its totient is φ = 10091664.

The previous prime is 22198303. The next prime is 22198307. The reversal of 22198306 is 60389122.

It is not an unprimeable number, because it can be changed into a prime (22198303) 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, 4630 + ... + 8113.

It is an arithmetic number, because the mean of its divisors is an integer number (2274804).

Almost surely, 2^22198306 is an apocalyptic number.

22198306 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

22198306 is a deficient number, since it is larger than the sum of its proper divisors (14198558).

22198306 is a wasteful number, since it uses less digits than its factorization.

22198306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12825.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 22198306 is about 4711.5078265880. The cubic root of 22198306 is about 281.0433269480.

The spelling of 22198306 in words is "twenty-two million, one hundred ninety-eight thousand, three hundred six".