16020813 has 8 divisors (see below), whose sum is σ = 21380800. Its totient is φ = 10670688.

The previous prime is 16020803. The next prime is 16020827. The reversal of 16020813 is 31802061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16020813 - 2¹⁰ = 16019789 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 16020813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16020803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3168 + ... + 6486.

It is an arithmetic number, because the mean of its divisors is an integer number (2672600).

Almost surely, 2^16020813 is an apocalyptic number.

It is an amenable number.

16020813 is a deficient number, since it is larger than the sum of its proper divisors (5359987).

16020813 is a wasteful number, since it uses less digits than its factorization.

16020813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4931.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 16020813 is about 4002.6007794933. The cubic root of 16020813 is about 252.0934240404.

Adding to 16020813 its reverse (31802061), we get a palindrome (47822874).

The spelling of 16020813 in words is "sixteen million, twenty thousand, eight hundred thirteen".