28160804 has 24 divisors (see below), whose sum is σ = 56844480. Its totient is φ = 11956896.

The previous prime is 28160779. The next prime is 28160807. The reversal of 28160804 is 40806182.

It is not an unprimeable number, because it can be changed into a prime (28160807) 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 7 ways as a sum of consecutive naturals, for example, 1562 + ... + 7665.

It is an arithmetic number, because the mean of its divisors is an integer number (2368520).

Almost surely, 2^28160804 is an apocalyptic number.

It is an amenable number.

28160804 is an abundant number, since it is smaller than the sum of its proper divisors (28683676).

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

28160804 is a wasteful number, since it uses less digits than its factorization.

28160804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9347 (or 9345 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 28160804 is about 5306.6754187533. The cubic root of 28160804 is about 304.2390922631.

Adding to 28160804 its reverse (40806182), we get a palindrome (68966986).

The spelling of 28160804 in words is "twenty-eight million, one hundred sixty thousand, eight hundred four".