28283783 has 8 divisors (see below), whose sum is σ = 30898560. Its totient is φ = 25676280.

The previous prime is 28283779. The next prime is 28283797. The reversal of 28283783 is 38738282.

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 28283783 - 2² = 28283779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28283783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28283743) 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, 9308 + ... + 11966.

It is an arithmetic number, because the mean of its divisors is an integer number (3862320).

Almost surely, 2^28283783 is an apocalyptic number.

28283783 is a deficient number, since it is larger than the sum of its proper divisors (2614777).

28283783 is a wasteful number, since it uses less digits than its factorization.

28283783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3637.

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

The square root of 28283783 is about 5318.2499941240. The cubic root of 28283783 is about 304.6813226168.

The spelling of 28283783 in words is "twenty-eight million, two hundred eighty-three thousand, seven hundred eighty-three".