28059960 has 128 divisors (see below), whose sum is σ = 91699200. Its totient is φ = 6842880.

The previous prime is 28059953. The next prime is 28059971. The reversal of 28059960 is 6995082.

It is a happy number.

It is a super-2 number, since 2×28059960² = 1574722710403200, which contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 70482 + ... + 70878.

It is an arithmetic number, because the mean of its divisors is an integer number (716400).

Almost surely, 2^28059960 is an apocalyptic number.

28059960 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 28059960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45849600).

28059960 is an abundant number, since it is smaller than the sum of its proper divisors (63639240).

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

28059960 is a wasteful number, since it uses less digits than its factorization.

28059960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 28059960 is about 5297.1652796567. The cubic root of 28059960 is about 303.8754972627.

The spelling of 28059960 in words is "twenty-eight million, fifty-nine thousand, nine hundred sixty".