28535784 has 16 divisors (see below), whose sum is σ = 71339520. Its totient is φ = 9511920.

The previous prime is 28535737. The next prime is 28535807. The reversal of 28535784 is 48753582.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 594472 + ... + 594519.

It is an arithmetic number, because the mean of its divisors is an integer number (4458720).

Almost surely, 2^28535784 is an apocalyptic number.

28535784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28535784 is an abundant number, since it is smaller than the sum of its proper divisors (42803736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28535784 is a wasteful number, since it uses less digits than its factorization.

28535784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189000 (or 1188996 counting only the distinct ones).

The product of its digits is 268800, while the sum is 42.

The square root of 28535784 is about 5341.8895533322. The cubic root of 28535784 is about 305.5835250112.

It can be divided in two parts, 2853578 and 4, that added together give a palindrome (2853582).

The spelling of 28535784 in words is "twenty-eight million, five hundred thirty-five thousand, seven hundred eighty-four".