445340 has 24 divisors (see below), whose sum is σ = 1069152. Its totient is φ = 152640.

The previous prime is 445339. The next prime is 445363. The reversal of 445340 is 43544.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable 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 7 ways as a sum of consecutive naturals, for example, 1451 + ... + 1730.

It is an arithmetic number, because the mean of its divisors is an integer number (44548).

2⁴⁴⁵³⁴⁰ is an apocalyptic number.

It is an amenable number.

445340 is an abundant number, since it is smaller than the sum of its proper divisors (623812).

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

445340 is a wasteful number, since it uses less digits than its factorization.

445340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3197 (or 3195 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 445340 is about 667.3379953217. The cubic root of 445340 is about 76.3655062072.

Adding to 445340 its reverse (43544), we get a palindrome (488884).

The spelling of 445340 in words is "four hundred forty-five thousand, three hundred forty".