27312728 has 16 divisors (see below), whose sum is σ = 53907000. Its totient is φ = 12937536.

The previous prime is 27312679. The next prime is 27312757. The reversal of 27312728 is 82721372.

It is a super-2 number, since 2×27312728² = 1491970221603968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27312694 and 27312703.

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, 89693 + ... + 89996.

Almost surely, 2^27312728 is an apocalyptic number.

It is an amenable number.

27312728 is a deficient number, since it is larger than the sum of its proper divisors (26594272).

27312728 is a wasteful number, since it uses less digits than its factorization.

27312728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179714 (or 179710 counting only the distinct ones).

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

The square root of 27312728 is about 5226.1580534844. The cubic root of 27312728 is about 301.1538085820.

The spelling of 27312728 in words is "twenty-seven million, three hundred twelve thousand, seven hundred twenty-eight".