28785459 has 16 divisors (see below), whose sum is σ = 39225600. Its totient is φ = 18772320.

The previous prime is 28785457. The next prime is 28785469. The reversal of 28785459 is 95458782.

It is not a de Polignac number, because 28785459 - 2¹ = 28785457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28785457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31284 + ... + 32190.

It is an arithmetic number, because the mean of its divisors is an integer number (2451600).

Almost surely, 2^28785459 is an apocalyptic number.

28785459 is a deficient number, since it is larger than the sum of its proper divisors (10440141).

28785459 is a wasteful number, since it uses less digits than its factorization.

28785459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130.

The product of its digits is 806400, while the sum is 48.

The square root of 28785459 is about 5365.2081972650. The cubic root of 28785459 is about 306.4721767476.

The spelling of 28785459 in words is "twenty-eight million, seven hundred eighty-five thousand, four hundred fifty-nine".