28544043 has 16 divisors (see below), whose sum is σ = 42048000. Its totient is φ = 17078880.

The previous prime is 28544039. The next prime is 28544053. The reversal of 28544043 is 34044582.

It is not a de Polignac number, because 28544043 - 2² = 28544039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28544043.

It is not an unprimeable number, because it can be changed into a prime (28544053) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2868 + ... + 8081.

It is an arithmetic number, because the mean of its divisors is an integer number (2628000).

Almost surely, 2^28544043 is an apocalyptic number.

28544043 is a deficient number, since it is larger than the sum of its proper divisors (13503957).

28544043 is a wasteful number, since it uses less digits than its factorization.

28544043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11042.

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 28544043 is about 5342.6625384727. The cubic root of 28544043 is about 305.6130034476.

The spelling of 28544043 in words is "twenty-eight million, five hundred forty-four thousand, forty-three".