27140728 has 16 divisors (see below), whose sum is σ = 51462000. Its totient is φ = 13417536.

The previous prime is 27140699. The next prime is 27140741. The reversal of 27140728 is 82704172.

It is a self number, because there is not a number n which added to its sum of digits gives 27140728.

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, 18348 + ... + 19771.

It is an arithmetic number, because the mean of its divisors is an integer number (3216375).

Almost surely, 2^27140728 is an apocalyptic number.

It is an amenable number.

27140728 is a deficient number, since it is larger than the sum of its proper divisors (24321272).

27140728 is a wasteful number, since it uses less digits than its factorization.

27140728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38214 (or 38210 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 27140728 is about 5209.6763815039. The cubic root of 27140728 is about 300.5203118783.

The spelling of 27140728 in words is "twenty-seven million, one hundred forty thousand, seven hundred twenty-eight".