28789160 has 32 divisors (see below), whose sum is σ = 68587560. Its totient is φ = 10838016.

The previous prime is 28789153. The next prime is 28789183. The reversal of 28789160 is 6198782.

It can be written as a sum of positive squares in 4 ways, for example, as 28238596 + 550564 = 5314^2 + 742^2 .

It is an unprimeable number.

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, 20489 + ... + 21848.

Almost surely, 2^28789160 is an apocalyptic number.

28789160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28789160 is an abundant number, since it is smaller than the sum of its proper divisors (39798400).

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

28789160 is a wasteful number, since it uses less digits than its factorization.

28789160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42365 (or 42361 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 28789160 is about 5365.5530935776. The cubic root of 28789160 is about 306.4853107507.

The spelling of 28789160 in words is "twenty-eight million, seven hundred eighty-nine thousand, one hundred sixty".