28928283 has 8 divisors (see below), whose sum is σ = 39901200. Its totient is φ = 18620448.

The previous prime is 28928269. The next prime is 28928309. The reversal of 28928283 is 38282982.

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

It is not a de Polignac number, because 28928283 - 2⁴ = 28928267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28928233) 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, 166168 + ... + 166341.

It is an arithmetic number, because the mean of its divisors is an integer number (4987650).

Almost surely, 2^28928283 is an apocalyptic number.

28928283 is a deficient number, since it is larger than the sum of its proper divisors (10972917).

28928283 is a wasteful number, since it uses less digits than its factorization.

28928283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332541.

The product of its digits is 110592, while the sum is 42.

The square root of 28928283 is about 5378.5019289761. The cubic root of 28928283 is about 306.9782121925.

It can be divided in two parts, 2892 and 8283, that added together give a triangular number (11175 = T₁₄₉).

The spelling of 28928283 in words is "twenty-eight million, nine hundred twenty-eight thousand, two hundred eighty-three".