28027760 has 20 divisors (see below), whose sum is σ = 65164728. Its totient is φ = 11211072.

The previous prime is 28027739. The next prime is 28027771. The reversal of 28027760 is 6772082.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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, 175094 + ... + 175253.

Almost surely, 2^28027760 is an apocalyptic number.

28027760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28027760 is an abundant number, since it is smaller than the sum of its proper divisors (37136968).

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

28027760 is a wasteful number, since it uses less digits than its factorization.

28027760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350360 (or 350354 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 28027760 is about 5294.1250457465. The cubic root of 28027760 is about 303.7592160774.

The spelling of 28027760 in words is "twenty-eight million, twenty-seven thousand, seven hundred sixty".