16800022 has 4 divisors (see below), whose sum is σ = 25200036. Its totient is φ = 8400010.

The previous prime is 16799989. The next prime is 16800023. The reversal of 16800022 is 22000861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22000861 = 97 ⋅226813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16800023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4200004 + ... + 4200007.

It is an arithmetic number, because the mean of its divisors is an integer number (6300009).

Almost surely, 2^16800022 is an apocalyptic number.

16800022 is a deficient number, since it is larger than the sum of its proper divisors (8400014).

16800022 is an equidigital number, since it uses as much as digits as its factorization.

16800022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8400013.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 16800022 is about 4098.7829901082. The cubic root of 16800022 is about 256.1159447940.

Adding to 16800022 its reverse (22000861), we get a palindrome (38800883).

The spelling of 16800022 in words is "sixteen million, eight hundred thousand, twenty-two".