28504160 has 24 divisors (see below), whose sum is σ = 67341456. Its totient is φ = 11401600.

The previous prime is 28504111. The next prime is 28504181. The reversal of 28504160 is 6140582.

It is a congruent number.

It is an unprimeable number.

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, 88916 + ... + 89235.

It is an arithmetic number, because the mean of its divisors is an integer number (2805894).

Almost surely, 2^28504160 is an apocalyptic number.

28504160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28504160 is an abundant number, since it is smaller than the sum of its proper divisors (38837296).

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

28504160 is a wasteful number, since it uses less digits than its factorization.

28504160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178166 (or 178158 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 28504160 is about 5338.9287314966. The cubic root of 28504160 is about 305.4705984314.

The spelling of 28504160 in words is "twenty-eight million, five hundred four thousand, one hundred sixty".