727281 has 6 divisors (see below), whose sum is σ = 1050530. Its totient is φ = 484848.

The previous prime is 727273. The next prime is 727289. The reversal of 727281 is 182727.

727281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (727273) and next prime (727289).

It can be written as a sum of positive squares in only one way, i.e., 680625 + 46656 = 825^2 + 216^2 .

It is not a de Polignac number, because 727281 - 2³ = 727273 is a prime.

It is a super-2 number, since 2×727281² = 1057875305922, which contains 22 as substring.

It is a Duffinian number.

727281 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 727281.

It is not an unprimeable number, because it can be changed into a prime (727289) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40396 + ... + 40413.

2⁷²⁷²⁸¹ is an apocalyptic number.

It is an amenable number.

727281 is a deficient number, since it is larger than the sum of its proper divisors (323249).

727281 is a wasteful number, since it uses less digits than its factorization.

727281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80815 (or 80812 counting only the distinct ones).

The product of its digits is 1568, while the sum is 27.

The square root of 727281 is about 852.8077157249. The cubic root of 727281 is about 89.9292035835.

The spelling of 727281 in words is "seven hundred twenty-seven thousand, two hundred eighty-one".