28694080 has 28 divisors (see below), whose sum is σ = 68328540. Its totient is φ = 11477504.

The previous prime is 28694053. The next prime is 28694117. The reversal of 28694080 is 8049682.

It can be written as a sum of positive squares in 2 ways, for example, as 9193024 + 19501056 = 3032^2 + 4416^2 .

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, 44515 + ... + 45154.

It is an arithmetic number, because the mean of its divisors is an integer number (2440305).

Almost surely, 2^28694080 is an apocalyptic number.

28694080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28694080 is an abundant number, since it is smaller than the sum of its proper divisors (39634460).

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

28694080 is an equidigital number, since it uses as much as digits as its factorization.

28694080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89686 (or 89676 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 28694080 is about 5356.6855423853. The cubic root of 28694080 is about 306.1475359008.

The spelling of 28694080 in words is "twenty-eight million, six hundred ninety-four thousand, eighty".