16027993 has 8 divisors (see below), whose sum is σ = 16628040. Its totient is φ = 15436800.

The previous prime is 16027969. The next prime is 16027997. The reversal of 16027993 is 39972061.

16027993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 13741849 + 2286144 = 3707^2 + 1512^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16027993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16027997) 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, 1593 + ... + 5881.

It is an arithmetic number, because the mean of its divisors is an integer number (2078505).

Almost surely, 2^16027993 is an apocalyptic number.

It is an amenable number.

16027993 is a deficient number, since it is larger than the sum of its proper divisors (600047).

16027993 is a wasteful number, since it uses less digits than its factorization.

16027993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4427.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 16027993 is about 4003.4975958529. The cubic root of 16027993 is about 252.1310784019.

It can be divided in two parts, 16027 and 993, that added together give a triangular number (17020 = T₁₈₄).

The spelling of 16027993 in words is "sixteen million, twenty-seven thousand, nine hundred ninety-three".