28300287 has 8 divisors (see below), whose sum is σ = 37759536. Its totient is φ = 18853952.

The previous prime is 28300273. The next prime is 28300297. The reversal of 28300287 is 78200382.

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

It is a cyclic number.

It is not a de Polignac number, because 28300287 - 2⁴ = 28300271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28300247) 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, 4603 + ... + 8819.

It is an arithmetic number, because the mean of its divisors is an integer number (4719942).

Almost surely, 2^28300287 is an apocalyptic number.

28300287 is a deficient number, since it is larger than the sum of its proper divisors (9459249).

28300287 is a wasteful number, since it uses less digits than its factorization.

28300287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6457.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 28300287 is about 5319.8014060677. The cubic root of 28300287 is about 304.7405730927.

The spelling of 28300287 in words is "twenty-eight million, three hundred thousand, two hundred eighty-seven".