726090 has 16 divisors (see below), whose sum is σ = 1742688. Its totient is φ = 193616.

The previous prime is 726071. The next prime is 726091. The reversal of 726090 is 90627.

It is a Curzon number.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 726090.

It is not an unprimeable number, because it can be changed into a prime (726091) 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, 12072 + ... + 12131.

It is an arithmetic number, because the mean of its divisors is an integer number (108918).

2⁷²⁶⁰⁹⁰ is an apocalyptic number.

726090 is an abundant number, since it is smaller than the sum of its proper divisors (1016598).

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

726090 is a wasteful number, since it uses less digits than its factorization.

726090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24213.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 726090 is about 852.1091479382. The cubic root of 726090 is about 89.8800872170.

The spelling of 726090 in words is "seven hundred twenty-six thousand, ninety".