724266 has 12 divisors (see below), whose sum is σ = 1569282. Its totient is φ = 241416.

The previous prime is 724259. The next prime is 724267. The reversal of 724266 is 662427.

It can be written as a sum of positive squares in only one way, i.e., 540225 + 184041 = 735^2 + 429^2 .

It is a super-2 number, since 2×724266² = 1049122477512, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (724267) 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, 20101 + ... + 20136.

2⁷²⁴²⁶⁶ is an apocalyptic number.

724266 is an abundant number, since it is smaller than the sum of its proper divisors (845016).

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

724266 is a wasteful number, since it uses less digits than its factorization.

724266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40245 (or 40242 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 724266 is about 851.0381895074. The cubic root of 724266 is about 89.8047619593.

It can be divided in two parts, 724 and 266, that added together give a triangular number (990 = T₄₄).

The spelling of 724266 in words is "seven hundred twenty-four thousand, two hundred sixty-six".