16221198 has 16 divisors (see below), whose sum is σ = 37077120. Its totient is φ = 4634616.

The previous prime is 16221197. The next prime is 16221203. The reversal of 16221198 is 89112261.

It is a happy number.

16221198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16221197) 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, 193068 + ... + 193151.

It is an arithmetic number, because the mean of its divisors is an integer number (2317320).

Almost surely, 2^16221198 is an apocalyptic number.

16221198 is an abundant number, since it is smaller than the sum of its proper divisors (20855922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16221198 is a wasteful number, since it uses less digits than its factorization.

16221198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386231.

The product of its digits is 1728, while the sum is 30.

The square root of 16221198 is about 4027.5548413398. The cubic root of 16221198 is about 253.1401162136.

The spelling of 16221198 in words is "sixteen million, two hundred twenty-one thousand, one hundred ninety-eight".