729261 has 24 divisors (see below), whose sum is σ = 1188096. Its totient is φ = 427680.

The previous prime is 729257. The next prime is 729269. The reversal of 729261 is 162927.

It is not a de Polignac number, because 729261 - 2² = 729257 is a prime.

It is a super-2 number, since 2×729261² = 1063643212242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729269) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2556 + ... + 2826.

It is an arithmetic number, because the mean of its divisors is an integer number (49504).

2⁷²⁹²⁶¹ is an apocalyptic number.

It is an amenable number.

729261 is a deficient number, since it is larger than the sum of its proper divisors (458835).

729261 is a wasteful number, since it uses less digits than its factorization.

729261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313 (or 310 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 729261 is about 853.9677979877. The cubic root of 729261 is about 90.0107394592.

It can be divided in two parts, 72926 and 1, that added together give a palindrome (72927).

The spelling of 729261 in words is "seven hundred twenty-nine thousand, two hundred sixty-one".