28382545 has 8 divisors (see below), whose sum is σ = 34442280. Its totient is φ = 22450560.

The previous prime is 28382539. The next prime is 28382551. The reversal of 28382545 is 54528382.

It is an interprime number because it is at equal distance from previous prime (28382539) and next prime (28382551).

It can be written as a sum of positive squares in 4 ways, for example, as 746496 + 27636049 = 864^2 + 5257^2 .

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

It is not a de Polignac number, because 28382545 - 2⁹ = 28382033 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31446 + ... + 32335.

It is an arithmetic number, because the mean of its divisors is an integer number (4305285).

Almost surely, 2^28382545 is an apocalyptic number.

It is an amenable number.

28382545 is a deficient number, since it is larger than the sum of its proper divisors (6059735).

28382545 is an equidigital number, since it uses as much as digits as its factorization.

28382545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63875.

The product of its digits is 76800, while the sum is 37.

The square root of 28382545 is about 5327.5270998841. The cubic root of 28382545 is about 305.0355418583.

It can be divided in two parts, 283 and 82545, that added together give a palindrome (82828).

The spelling of 28382545 in words is "twenty-eight million, three hundred eighty-two thousand, five hundred forty-five".