28862545 has 4 divisors (see below), whose sum is σ = 34635060. Its totient is φ = 23090032.

The previous prime is 28862543. The next prime is 28862563. The reversal of 28862545 is 54526882.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8105409 + 20757136 = 2847^2 + 4556^2 .

It is a cyclic number.

It is not a de Polignac number, because 28862545 - 2¹ = 28862543 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 28862498 and 28862507.

It is not an unprimeable number, because it can be changed into a prime (28862543) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2886250 + ... + 2886259.

It is an arithmetic number, because the mean of its divisors is an integer number (8658765).

Almost surely, 2^28862545 is an apocalyptic number.

It is an amenable number.

28862545 is a deficient number, since it is larger than the sum of its proper divisors (5772515).

28862545 is an equidigital number, since it uses as much as digits as its factorization.

28862545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5772514.

The product of its digits is 153600, while the sum is 40.

The square root of 28862545 is about 5372.3872719676. The cubic root of 28862545 is about 306.7455052239.

The spelling of 28862545 in words is "twenty-eight million, eight hundred sixty-two thousand, five hundred forty-five".