28326815 has 16 divisors (see below), whose sum is σ = 39035520. Its totient is φ = 19516320.

The previous prime is 28326791. The next prime is 28326829. The reversal of 28326815 is 51862382.

It is not a de Polignac number, because 28326815 - 2⁸ = 28326559 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12509 + ... + 14598.

It is an arithmetic number, because the mean of its divisors is an integer number (2439720).

Almost surely, 2^28326815 is an apocalyptic number.

28326815 is a deficient number, since it is larger than the sum of its proper divisors (10708705).

28326815 is a wasteful number, since it uses less digits than its factorization.

28326815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27142.

The product of its digits is 23040, while the sum is 35.

The square root of 28326815 is about 5322.2941482034. The cubic root of 28326815 is about 304.8357621541.

The spelling of 28326815 in words is "twenty-eight million, three hundred twenty-six thousand, eight hundred fifteen".