28836555 has 16 divisors (see below), whose sum is σ = 50333184. Its totient is φ = 13981280.

The previous prime is 28836529. The next prime is 28836557. The reversal of 28836555 is 55563882.

It is not a de Polignac number, because 28836555 - 2⁸ = 28836299 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28836557) 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 15 ways as a sum of consecutive naturals, for example, 87219 + ... + 87548.

It is an arithmetic number, because the mean of its divisors is an integer number (3145824).

Almost surely, 2^28836555 is an apocalyptic number.

28836555 is a deficient number, since it is larger than the sum of its proper divisors (21496629).

28836555 is a wasteful number, since it uses less digits than its factorization.

28836555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174786.

The product of its digits is 288000, while the sum is 42.

The square root of 28836555 is about 5369.9678769989. The cubic root of 28836555 is about 306.6534053549.

It can be divided in two parts, 288365 and 55, that added together give a triangular number (288420 = T₇₅₉).

The spelling of 28836555 in words is "twenty-eight million, eight hundred thirty-six thousand, five hundred fifty-five".