724281 has 8 divisors (see below), whose sum is σ = 973824. Its totient is φ = 478800.

The previous prime is 724277. The next prime is 724291. The reversal of 724281 is 182427.

724281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 724281 - 2² = 724277 is a prime.

It is a super-2 number, since 2×724281² = 1049165933922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

724281 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 724281.

It is not an unprimeable number, because it can be changed into a prime (724211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570 + ... + 1331.

It is an arithmetic number, because the mean of its divisors is an integer number (121728).

2⁷²⁴²⁸¹ is an apocalyptic number.

It is an amenable number.

724281 is a deficient number, since it is larger than the sum of its proper divisors (249543).

724281 is a wasteful number, since it uses less digits than its factorization.

724281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031.

The product of its digits is 896, while the sum is 24.

The square root of 724281 is about 851.0470022273. The cubic root of 724281 is about 89.8053819259.

The spelling of 724281 in words is "seven hundred twenty-four thousand, two hundred eighty-one".