28682815 has 8 divisors (see below), whose sum is σ = 39336480. Its totient is φ = 19668192.

The previous prime is 28682813. The next prime is 28682867. The reversal of 28682815 is 51828682.

It is a happy number.

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 28682815 - 2¹ = 28682813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28682813) 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, 409720 + ... + 409789.

It is an arithmetic number, because the mean of its divisors is an integer number (4917060).

Almost surely, 2^28682815 is an apocalyptic number.

28682815 is a deficient number, since it is larger than the sum of its proper divisors (10653665).

28682815 is an equidigital number, since it uses as much as digits as its factorization.

28682815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819521.

The product of its digits is 61440, while the sum is 40.

The square root of 28682815 is about 5355.6339494032. The cubic root of 28682815 is about 306.1074672013.

The spelling of 28682815 in words is "twenty-eight million, six hundred eighty-two thousand, eight hundred fifteen".