16228811 has 4 divisors (see below), whose sum is σ = 16239624. Its totient is φ = 16218000.

The previous prime is 16228801. The next prime is 16228813. The reversal of 16228811 is 11882261.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 16228811 - 2⁶ = 16228747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16228813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2705 + ... + 6306.

It is an arithmetic number, because the mean of its divisors is an integer number (4059906).

Almost surely, 2^16228811 is an apocalyptic number.

16228811 is a deficient number, since it is larger than the sum of its proper divisors (10813).

16228811 is an equidigital number, since it uses as much as digits as its factorization.

16228811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10812.

The product of its digits is 1536, while the sum is 29.

The square root of 16228811 is about 4028.4998448554. The cubic root of 16228811 is about 253.1797116100.

The spelling of 16228811 in words is "sixteen million, two hundred twenty-eight thousand, eight hundred eleven".