28828615 has 8 divisors (see below), whose sum is σ = 34669440. Its totient is φ = 23012832.

The previous prime is 28828609. The next prime is 28828621. The reversal of 28828615 is 51682882.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28828609) and next prime (28828621).

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 28828615 - 2¹⁵ = 28795847 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3624 + ... + 8413.

It is an arithmetic number, because the mean of its divisors is an integer number (4333680).

Almost surely, 2^28828615 is an apocalyptic number.

28828615 is a deficient number, since it is larger than the sum of its proper divisors (5840825).

28828615 is a wasteful number, since it uses less digits than its factorization.

28828615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12521.

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

The square root of 28828615 is about 5369.2285293141. The cubic root of 28828615 is about 306.6252576151.

The spelling of 28828615 in words is "twenty-eight million, eight hundred twenty-eight thousand, six hundred fifteen".