726288 has 20 divisors (see below), whose sum is σ = 1876368. Its totient is φ = 242080.

The previous prime is 726287. The next prime is 726289. The reversal of 726288 is 882627.

It is an interprime number because it is at equal distance from previous prime (726287) and next prime (726289).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (726287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7518 + ... + 7613.

2⁷²⁶²⁸⁸ is an apocalyptic number.

It is an amenable number.

726288 is an abundant number, since it is smaller than the sum of its proper divisors (1150080).

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

726288 is a wasteful number, since it uses less digits than its factorization.

726288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15142 (or 15136 counting only the distinct ones).

The product of its digits is 10752, while the sum is 33.

The square root of 726288 is about 852.2253223180. The cubic root of 726288 is about 89.8882563787. Note that the first 3 decimals are identical.

The spelling of 726288 in words is "seven hundred twenty-six thousand, two hundred eighty-eight".