28782833 has 8 divisors (see below), whose sum is σ = 29073408. Its totient is φ = 28494144.

The previous prime is 28782829. The next prime is 28782839. The reversal of 28782833 is 33828782.

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

It is a cyclic number.

It is not a de Polignac number, because 28782833 - 2² = 28782829 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28782839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74960 + ... + 75342.

It is an arithmetic number, because the mean of its divisors is an integer number (3634176).

Almost surely, 2^28782833 is an apocalyptic number.

It is an amenable number.

28782833 is a deficient number, since it is larger than the sum of its proper divisors (290575).

28782833 is a wasteful number, since it uses less digits than its factorization.

28782833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943.

The product of its digits is 129024, while the sum is 41.

The square root of 28782833 is about 5364.9634667908. The cubic root of 28782833 is about 306.4628569911.

The spelling of 28782833 in words is "twenty-eight million, seven hundred eighty-two thousand, eight hundred thirty-three".