28118080 has 28 divisors (see below), whose sum is σ = 66956940. Its totient is φ = 11247104.

The previous prime is 28118063. The next prime is 28118093. The reversal of 28118080 is 8081182.

It can be written as a sum of positive squares in 2 ways, for example, as 4769856 + 23348224 = 2184^2 + 4832^2 .

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, 43615 + ... + 44254.

Almost surely, 2^28118080 is an apocalyptic number.

28118080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28118080 is an abundant number, since it is smaller than the sum of its proper divisors (38838860).

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

28118080 is an equidigital number, since it uses as much as digits as its factorization.

28118080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87886 (or 87876 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 28.

The square root of 28118080 is about 5302.6483949061. The cubic root of 28118080 is about 304.0851561993.

The spelling of 28118080 in words is "twenty-eight million, one hundred eighteen thousand, eighty".