16402863 has 4 divisors (see below), whose sum is σ = 21870488. Its totient is φ = 10935240.

The previous prime is 16402861. The next prime is 16402879. The reversal of 16402863 is 36820461.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 16402863 - 2¹ = 16402861 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16402863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16402861) 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, 2733808 + ... + 2733813.

It is an arithmetic number, because the mean of its divisors is an integer number (5467622).

Almost surely, 2^16402863 is an apocalyptic number.

16402863 is a deficient number, since it is larger than the sum of its proper divisors (5467625).

16402863 is an equidigital number, since it uses as much as digits as its factorization.

16402863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5467624.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 16402863 is about 4050.0448145669. The cubic root of 16402863 is about 254.0816021110.

The spelling of 16402863 in words is "sixteen million, four hundred two thousand, eight hundred sixty-three".