20199822 has 16 divisors (see below), whose sum is σ = 40580352. Its totient is φ = 6703160.

The previous prime is 20199821. The next prime is 20199847. The reversal of 20199822 is 22899102.

It is a happy number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20199821) 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, 6054 + ... + 8777.

It is an arithmetic number, because the mean of its divisors is an integer number (2536272).

Almost surely, 2^20199822 is an apocalyptic number.

20199822 is an abundant number, since it is smaller than the sum of its proper divisors (20380530).

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

20199822 is a wasteful number, since it uses less digits than its factorization.

20199822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15063.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 20199822 is about 4494.4212085651. The cubic root of 20199822 is about 272.3427682015.

The spelling of 20199822 in words is "twenty million, one hundred ninety-nine thousand, eight hundred twenty-two".