28105083 has 8 divisors (see below), whose sum is σ = 41637200. Its totient is φ = 18736704.

The previous prime is 28105069. The next prime is 28105087. The reversal of 28105083 is 38050182.

It is a happy number.

It is not a de Polignac number, because 28105083 - 2⁶ = 28105019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1040929 = 28105083 / (2 + 8 + 1 + 0 + 5 + 0 + 8 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28105087) 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, 520438 + ... + 520491.

It is an arithmetic number, because the mean of its divisors is an integer number (5204650).

Almost surely, 2^28105083 is an apocalyptic number.

28105083 is a deficient number, since it is larger than the sum of its proper divisors (13532117).

28105083 is a wasteful number, since it uses less digits than its factorization.

28105083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040938 (or 1040932 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 28105083 is about 5301.4227335688. The cubic root of 28105083 is about 304.0382966239.

It can be divided in two parts, 28 and 105083, that added together give a triangular number (105111 = T₄₅₈).

The spelling of 28105083 in words is "twenty-eight million, one hundred five thousand, eighty-three".