28127760 has 80 divisors (see below), whose sum is σ = 87744384. Its totient is φ = 7453696.

The previous prime is 28127753. The next prime is 28127779. The reversal of 28127760 is 6772182.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55669 + ... + 56171.

Almost surely, 2^28127760 is an apocalyptic number.

28127760 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 28127760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43872192).

28127760 is an abundant number, since it is smaller than the sum of its proper divisors (59616624).

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

28127760 is a wasteful number, since it uses less digits than its factorization.

28127760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752 (or 746 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 28127760 is about 5303.5610678109. The cubic root of 28127760 is about 304.1200472325.

The spelling of 28127760 in words is "twenty-eight million, one hundred twenty-seven thousand, seven hundred sixty".