28716312 has 16 divisors (see below), whose sum is σ = 71790840. Its totient is φ = 9572096.

The previous prime is 28716287. The next prime is 28716431. The reversal of 28716312 is 21361782.

It is a self number, because there is not a number n which added to its sum of digits gives 28716312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598233 + ... + 598280.

Almost surely, 2^28716312 is an apocalyptic number.

It is an amenable number.

28716312 is an abundant number, since it is smaller than the sum of its proper divisors (43074528).

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

28716312 is a wasteful number, since it uses less digits than its factorization.

28716312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196522 (or 1196518 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 28716312 is about 5358.7603043988. The cubic root of 28716312 is about 306.2265825771.

The spelling of 28716312 in words is "twenty-eight million, seven hundred sixteen thousand, three hundred twelve".