726522 has 16 divisors (see below), whose sum is σ = 1529760. Its totient is φ = 229392.

The previous prime is 726521. The next prime is 726527. The reversal of 726522 is 225627.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 726492 and 726501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726521) 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, 3073 + ... + 3300.

It is an arithmetic number, because the mean of its divisors is an integer number (95610).

2⁷²⁶⁵²² is an apocalyptic number.

726522 is an abundant number, since it is smaller than the sum of its proper divisors (803238).

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

726522 is a wasteful number, since it uses less digits than its factorization.

726522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6397.

The product of its digits is 1680, while the sum is 24.

The square root of 726522 is about 852.3625988979. The cubic root of 726522 is about 89.8979089286.

The spelling of 726522 in words is "seven hundred twenty-six thousand, five hundred twenty-two".