27728460 has 48 divisors (see below), whose sum is σ = 86268000. Its totient is φ = 7394112.

The previous prime is 27728431. The next prime is 27728473. The reversal of 27728460 is 6482772.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 25135 + ... + 26214.

It is an arithmetic number, because the mean of its divisors is an integer number (1797250).

Almost surely, 2^27728460 is an apocalyptic number.

27728460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27728460 is an abundant number, since it is smaller than the sum of its proper divisors (58539540).

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

27728460 is a wasteful number, since it uses less digits than its factorization.

27728460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51367 (or 51359 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 27728460 is about 5265.7819932086. The cubic root of 27728460 is about 302.6740932625.

The spelling of 27728460 in words is "twenty-seven million, seven hundred twenty-eight thousand, four hundred sixty".