28614784 has 32 divisors (see below), whose sum is σ = 62191440. Its totient is φ = 13006080.

The previous prime is 28614763. The next prime is 28614811. The reversal of 28614784 is 48741682.

It is a tau number, because it is divible by the number of its divisors (32).

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, 8754 + ... + 11569.

Almost surely, 2^28614784 is an apocalyptic number.

It is an amenable number.

28614784 is an abundant number, since it is smaller than the sum of its proper divisors (33576656).

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

28614784 is a wasteful number, since it uses less digits than its factorization.

28614784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20348 (or 20336 counting only the distinct ones).

The product of its digits is 86016, while the sum is 40.

The square root of 28614784 is about 5349.2788298985. The cubic root of 28614784 is about 305.8652631362.

It can be divided in two parts, 286 and 14784, that multiplied together give a palindrome (4228224).

The spelling of 28614784 in words is "twenty-eight million, six hundred fourteen thousand, seven hundred eighty-four".