28680303 has 8 divisors (see below), whose sum is σ = 38379568. Its totient is φ = 19050624.

The previous prime is 28680299. The next prime is 28680319. The reversal of 28680303 is 30308682.

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

It is not a de Polignac number, because 28680303 - 2² = 28680299 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28680373) 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, 16426 + ... + 18087.

It is an arithmetic number, because the mean of its divisors is an integer number (4797446).

Almost surely, 2^28680303 is an apocalyptic number.

28680303 is a deficient number, since it is larger than the sum of its proper divisors (9699265).

28680303 is a wasteful number, since it uses less digits than its factorization.

28680303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34793.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 28680303 is about 5355.3994248795. The cubic root of 28680303 is about 306.0985307888.

Adding to 28680303 its reverse (30308682), we get a palindrome (58988985).

The spelling of 28680303 in words is "twenty-eight million, six hundred eighty thousand, three hundred three".