326445 has 16 divisors (see below), whose sum is σ = 597120. Its totient is φ = 149184.

The previous prime is 326441. The next prime is 326449. The reversal of 326445 is 544623.

It is an interprime number because it is at equal distance from previous prime (326441) and next prime (326449).

It is not a de Polignac number, because 326445 - 2² = 326441 is a prime.

It is an Ulam number.

326445 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1450 + ... + 1659.

It is an arithmetic number, because the mean of its divisors is an integer number (37320).

2³²⁶⁴⁴⁵ is an apocalyptic number.

326445 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

326445 is a deficient number, since it is larger than the sum of its proper divisors (270675).

326445 is a wasteful number, since it uses less digits than its factorization.

326445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124.

The product of its digits is 2880, while the sum is 24.

The square root of 326445 is about 571.3536558035. The cubic root of 326445 is about 68.8551888392.

The spelling of 326445 in words is "three hundred twenty-six thousand, four hundred forty-five".