28826215 has 8 divisors (see below), whose sum is σ = 37736208. Its totient is φ = 20964480.

The previous prime is 28826209. The next prime is 28826227. The reversal of 28826215 is 51262882.

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

It is not a de Polignac number, because 28826215 - 2³ = 28826207 is a prime.

It is a Duffinian number.

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, 262002 + ... + 262111.

It is an arithmetic number, because the mean of its divisors is an integer number (4717026).

Almost surely, 2^28826215 is an apocalyptic number.

28826215 is a deficient number, since it is larger than the sum of its proper divisors (8909993).

28826215 is a wasteful number, since it uses less digits than its factorization.

28826215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524129.

The product of its digits is 15360, while the sum is 34.

The square root of 28826215 is about 5369.0050288671. The cubic root of 28826215 is about 306.6167484649.

The spelling of 28826215 in words is "twenty-eight million, eight hundred twenty-six thousand, two hundred fifteen".