28544135 has 8 divisors (see below), whose sum is σ = 34452000. Its totient is φ = 22702624.

The previous prime is 28544129. The next prime is 28544143. The reversal of 28544135 is 53144582.

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 28544135 - 2¹⁸ = 28281991 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15635 + ... + 17364.

It is an arithmetic number, because the mean of its divisors is an integer number (4306500).

Almost surely, 2^28544135 is an apocalyptic number.

28544135 is a deficient number, since it is larger than the sum of its proper divisors (5907865).

28544135 is a wasteful number, since it uses less digits than its factorization.

28544135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33177.

The product of its digits is 19200, while the sum is 32.

The square root of 28544135 is about 5342.6711484051. The cubic root of 28544135 is about 305.6133317866.

The spelling of 28544135 in words is "twenty-eight million, five hundred forty-four thousand, one hundred thirty-five".