16828813 has 4 divisors (see below), whose sum is σ = 17714560. Its totient is φ = 15943068.

The previous prime is 16828807. The next prime is 16828841. The reversal of 16828813 is 31882861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31882861 = 29 ⋅1099409.

It is a cyclic number.

It is not a de Polignac number, because 16828813 - 2¹⁷ = 16697741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16828213) 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, 442845 + ... + 442882.

It is an arithmetic number, because the mean of its divisors is an integer number (4428640).

Almost surely, 2^16828813 is an apocalyptic number.

It is an amenable number.

16828813 is a deficient number, since it is larger than the sum of its proper divisors (885747).

16828813 is an equidigital number, since it uses as much as digits as its factorization.

16828813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885746.

The product of its digits is 18432, while the sum is 37.

The square root of 16828813 is about 4102.2936267410. The cubic root of 16828813 is about 256.2621673382.

The spelling of 16828813 in words is "sixteen million, eight hundred twenty-eight thousand, eight hundred thirteen".