28282660 has 48 divisors (see below), whose sum is σ = 68221440. Its totient is φ = 9648000.

The previous prime is 28282613. The next prime is 28282669. The reversal of 28282660 is 6628282.

It is not an unprimeable number, because it can be changed into a prime (28282669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37285 + ... + 38035.

It is an arithmetic number, because the mean of its divisors is an integer number (1421280).

Almost surely, 2^28282660 is an apocalyptic number.

28282660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28282660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34110720).

28282660 is an abundant number, since it is smaller than the sum of its proper divisors (39938780).

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

28282660 is a wasteful number, since it uses less digits than its factorization.

28282660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036 (or 1034 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 28282660 is about 5318.1444132329. The cubic root of 28282660 is about 304.6772901334.

The spelling of 28282660 in words is "twenty-eight million, two hundred eighty-two thousand, six hundred sixty".