28683091 has 8 divisors (see below), whose sum is σ = 29904768. Its totient is φ = 27480000.

The previous prime is 28683089. The next prime is 28683101. The reversal of 28683091 is 19038682.

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 28683091 - 2¹ = 28683089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28683091.

It is not an unprimeable number, because it can be changed into a prime (28683041) 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, 1450 + ... + 7711.

It is an arithmetic number, because the mean of its divisors is an integer number (3738096).

Almost surely, 2^28683091 is an apocalyptic number.

28683091 is a deficient number, since it is larger than the sum of its proper divisors (1221677).

28683091 is a wasteful number, since it uses less digits than its factorization.

28683091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9293.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 28683091 is about 5355.6597165989. The cubic root of 28683091 is about 306.1084490365.

The spelling of 28683091 in words is "twenty-eight million, six hundred eighty-three thousand, ninety-one".