28646849 has 8 divisors (see below), whose sum is σ = 35715648. Its totient is φ = 22322160.

The previous prime is 28646833. The next prime is 28646857. The reversal of 28646849 is 94864682.

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

It is not a de Polignac number, because 28646849 - 2⁴ = 28646833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28646899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185942 + ... + 186095.

It is an arithmetic number, because the mean of its divisors is an integer number (4464456).

Almost surely, 2^28646849 is an apocalyptic number.

It is an amenable number.

28646849 is a deficient number, since it is larger than the sum of its proper divisors (7068799).

28646849 is a wasteful number, since it uses less digits than its factorization.

28646849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372055.

The product of its digits is 663552, while the sum is 47.

The square root of 28646849 is about 5352.2751237208. The cubic root of 28646849 is about 305.9794687693.

The spelling of 28646849 in words is "twenty-eight million, six hundred forty-six thousand, eight hundred forty-nine".