28116304 has 20 divisors (see below), whose sum is σ = 56844576. Its totient is φ = 13446752.

The previous prime is 28116301. The next prime is 28116307. The reversal of 28116304 is 40361182.

It is an interprime number because it is at equal distance from previous prime (28116301) and next prime (28116307).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28116301) 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, 37834 + ... + 38569.

Almost surely, 2^28116304 is an apocalyptic number.

It is an amenable number.

28116304 is an abundant number, since it is smaller than the sum of its proper divisors (28728272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28116304 is a wasteful number, since it uses less digits than its factorization.

28116304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76434 (or 76428 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 28116304 is about 5302.4809287729. The cubic root of 28116304 is about 304.0787538346.

Adding to 28116304 its reverse (40361182), we get a palindrome (68477486).

The spelling of 28116304 in words is "twenty-eight million, one hundred sixteen thousand, three hundred four".