28316080 has 80 divisors (see below), whose sum is σ = 74682720. Its totient is φ = 9897984.

The previous prime is 28316077. The next prime is 28316081. The reversal of 28316080 is 8061382.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28316081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19044 + ... + 20476.

It is an arithmetic number, because the mean of its divisors is an integer number (933534).

Almost surely, 2^28316080 is an apocalyptic number.

28316080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28316080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37341360).

28316080 is an abundant number, since it is smaller than the sum of its proper divisors (46366640).

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

28316080 is a wasteful number, since it uses less digits than its factorization.

28316080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1478 (or 1472 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 28316080 is about 5321.2855589604. The cubic root of 28316080 is about 304.7972494660.

It can be divided in two parts, 2831 and 6080, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 28316080 in words is "twenty-eight million, three hundred sixteen thousand, eighty".