16228801 has 2 divisors, whose sum is σ = 16228802. Its totient is φ = 16228800.

The previous prime is 16228799. The next prime is 16228813. The reversal of 16228801 is 10882261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12787776 + 3441025 = 3576^2 + 1855^2 .

It is a cyclic number.

It is not a de Polignac number, because 16228801 - 2¹ = 16228799 is a prime.

Together with 16228799, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 16228801.

It is not a weakly prime, because it can be changed into another prime (16228001) 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 as a sum of consecutive naturals, namely, 8114400 + 8114401.

It is an arithmetic number, because the mean of its divisors is an integer number (8114401).

Almost surely, 2^16228801 is an apocalyptic number.

It is an amenable number.

16228801 is a deficient number, since it is larger than the sum of its proper divisors (1).

16228801 is an equidigital number, since it uses as much as digits as its factorization.

16228801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 16228801 is about 4028.4986036984. The cubic root of 16228801 is about 253.1796596079.

The spelling of 16228801 in words is "sixteen million, two hundred twenty-eight thousand, eight hundred one".