28286834 has 8 divisors (see below), whose sum is σ = 42496428. Its totient is φ = 14121360.

The previous prime is 28286831. The next prime is 28286851. The reversal of 28286834 is 43868282.

It can be written as a sum of positive squares in 2 ways, for example, as 22061809 + 6225025 = 4697^2 + 2495^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28286791 and 28286800.

It is not an unprimeable number, because it can be changed into a prime (28286831) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9377 + ... + 12020.

Almost surely, 2^28286834 is an apocalyptic number.

28286834 is a deficient number, since it is larger than the sum of its proper divisors (14209594).

28286834 is a wasteful number, since it uses less digits than its factorization.

28286834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22060.

The product of its digits is 147456, while the sum is 41.

The square root of 28286834 is about 5318.5368288656. The cubic root of 28286834 is about 304.6922776494.

The spelling of 28286834 in words is "twenty-eight million, two hundred eighty-six thousand, eight hundred thirty-four".