28116319 has 8 divisors (see below), whose sum is σ = 35054208. Its totient is φ = 21908760.

The previous prime is 28116313. The next prime is 28116353. The reversal of 28116319 is 91361182.

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

It is a cyclic number.

It is not a de Polignac number, because 28116319 - 2¹⁹ = 27592031 is a prime.

It is a super-2 number, since 2×28116319² = 1581054788219522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28116313) 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, 182497 + ... + 182650.

It is an arithmetic number, because the mean of its divisors is an integer number (4381776).

Almost surely, 2^28116319 is an apocalyptic number.

28116319 is a deficient number, since it is larger than the sum of its proper divisors (6937889).

28116319 is a wasteful number, since it uses less digits than its factorization.

28116319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365165.

The product of its digits is 2592, while the sum is 31.

The square root of 28116319 is about 5302.4823432049. The cubic root of 28116319 is about 304.0788079098.

It can be divided in two parts, 281163 and 19, that added together give a palindrome (281182).

The spelling of 28116319 in words is "twenty-eight million, one hundred sixteen thousand, three hundred nineteen".