28147804 has 12 divisors (see below), whose sum is σ = 49344064. Its totient is φ = 14049504.

The previous prime is 28147793. The next prime is 28147807. The reversal of 28147804 is 40874182.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28147804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28147807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3369 + ... + 8224.

Almost surely, 2^28147804 is an apocalyptic number.

It is an amenable number.

28147804 is a deficient number, since it is larger than the sum of its proper divisors (21196260).

28147804 is a wasteful number, since it uses less digits than its factorization.

28147804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12204 (or 12202 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 28147804 is about 5305.4504050080. The cubic root of 28147804 is about 304.1922692988.

The spelling of 28147804 in words is "twenty-eight million, one hundred forty-seven thousand, eight hundred four".