28298115 has 48 divisors (see below), whose sum is σ = 52767936. Its totient is φ = 13977600.

The previous prime is 28298099. The next prime is 28298141. The reversal of 28298115 is 51189282.

It is not a de Polignac number, because 28298115 - 2⁴ = 28298099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28298115.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54055 + ... + 54575.

It is an arithmetic number, because the mean of its divisors is an integer number (1099332).

Almost surely, 2^28298115 is an apocalyptic number.

28298115 is a deficient number, since it is larger than the sum of its proper divisors (24469821).

28298115 is a wasteful number, since it uses less digits than its factorization.

28298115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620 (or 617 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 28298115 is about 5319.5972591917. The cubic root of 28298115 is about 304.7327767824.

The spelling of 28298115 in words is "twenty-eight million, two hundred ninety-eight thousand, one hundred fifteen".