28483209 has 6 divisors (see below), whose sum is σ = 41142426. Its totient is φ = 18988800.

The previous prime is 28483183. The next prime is 28483267. The reversal of 28483209 is 90238482.

It can be written as a sum of positive squares in only one way, i.e., 23765625 + 4717584 = 4875^2 + 2172^2 .

It is not a de Polignac number, because 28483209 - 2⁹ = 28482697 is a prime.

It is a super-2 number, since 2×28483209² = 1622586389875362, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28483909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1582392 + ... + 1582409.

It is an arithmetic number, because the mean of its divisors is an integer number (6857071).

Almost surely, 2^28483209 is an apocalyptic number.

It is an amenable number.

28483209 is a deficient number, since it is larger than the sum of its proper divisors (12659217).

28483209 is a wasteful number, since it uses less digits than its factorization.

28483209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3164807 (or 3164804 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 28483209 is about 5336.9662730806. The cubic root of 28483209 is about 305.3957382103.

The spelling of 28483209 in words is "twenty-eight million, four hundred eighty-three thousand, two hundred nine".