16216863 has 32 divisors (see below), whose sum is σ = 24675840. Its totient is φ = 9398400.

The previous prime is 16216831. The next prime is 16216873. The reversal of 16216863 is 36861261.

It is not a de Polignac number, because 16216863 - 2⁵ = 16216831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16216873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90508 + ... + 90686.

It is an arithmetic number, because the mean of its divisors is an integer number (771120).

Almost surely, 2^16216863 is an apocalyptic number.

16216863 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

16216863 is a deficient number, since it is larger than the sum of its proper divisors (8458977).

16216863 is a wasteful number, since it uses less digits than its factorization.

16216863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319.

The product of its digits is 10368, while the sum is 33.

The square root of 16216863 is about 4027.0166376612. The cubic root of 16216863 is about 253.1175642382.

The spelling of 16216863 in words is "sixteen million, two hundred sixteen thousand, eight hundred sixty-three".