28436545 has 8 divisors (see below), whose sum is σ = 34917696. Its totient is φ = 22220016.

The previous prime is 28436539. The next prime is 28436557. The reversal of 28436545 is 54563482.

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

It is a cyclic number.

It is not a de Polignac number, because 28436545 - 2³ = 28436537 is a prime.

It is a Duffinian number.

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, 65917 + ... + 66346.

It is an arithmetic number, because the mean of its divisors is an integer number (4364712).

Almost surely, 2^28436545 is an apocalyptic number.

It is an amenable number.

28436545 is a deficient number, since it is larger than the sum of its proper divisors (6481151).

28436545 is a wasteful number, since it uses less digits than its factorization.

28436545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132311.

The product of its digits is 115200, while the sum is 37.

The square root of 28436545 is about 5332.5927089925. The cubic root of 28436545 is about 305.2288705857.

The spelling of 28436545 in words is "twenty-eight million, four hundred thirty-six thousand, five hundred forty-five".