28090314 has 96 divisors (see below), whose sum is σ = 75479040. Its totient is φ = 7655472.

The previous prime is 28090301. The next prime is 28090319. The reversal of 28090314 is 41309082.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (28090319) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78067 + ... + 78425.

It is an arithmetic number, because the mean of its divisors is an integer number (786240).

Almost surely, 2^28090314 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28090314, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37739520).

28090314 is an abundant number, since it is smaller than the sum of its proper divisors (47388726).

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

28090314 is a wasteful number, since it uses less digits than its factorization.

28090314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 28090314 is about 5300.0296225587. The cubic root of 28090314 is about 303.9850307149.

Adding to 28090314 its reverse (41309082), we get a palindrome (69399396).

The spelling of 28090314 in words is "twenty-eight million, ninety thousand, three hundred fourteen".