345726 has 12 divisors (see below), whose sum is σ = 749112. Its totient is φ = 115236.

The previous prime is 345707. The next prime is 345727. The reversal of 345726 is 627543.

It is a happy number.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 345726.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345727) by changing a digit.

345726 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9586 + ... + 9621.

It is an arithmetic number, because the mean of its divisors is an integer number (62426).

2³⁴⁵⁷²⁶ is an apocalyptic number.

345726 is an abundant number, since it is smaller than the sum of its proper divisors (403386).

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

345726 is a wasteful number, since it uses less digits than its factorization.

345726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19215 (or 19212 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 345726 is about 587.9846936783. The cubic root of 345726 is about 70.1849530660.

The spelling of 345726 in words is "three hundred forty-five thousand, seven hundred twenty-six".