22198516 has 12 divisors (see below), whose sum is σ = 39316032. Its totient is φ = 10965368.

The previous prime is 22198513. The next prime is 22198591. The reversal of 22198516 is 61589122.

It is a super-2 number, since 2×22198516² = 985548225204512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22198513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33100 + ... + 33763.

It is an arithmetic number, because the mean of its divisors is an integer number (3276336).

Almost surely, 2^22198516 is an apocalyptic number.

It is an amenable number.

22198516 is a deficient number, since it is larger than the sum of its proper divisors (17117516).

22198516 is a wasteful number, since it uses less digits than its factorization.

22198516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66950 (or 66948 counting only the distinct ones).

The product of its digits is 8640, while the sum is 34.

The square root of 22198516 is about 4711.5301123945. The cubic root of 22198516 is about 281.0442131855.

The spelling of 22198516 in words is "twenty-two million, one hundred ninety-eight thousand, five hundred sixteen".