445740 has 96 divisors (see below), whose sum is σ = 1451520. Its totient is φ = 101376.

The previous prime is 445703. The next prime is 445741. The reversal of 445740 is 47544.

It is a self number, because there is not a number n which added to its sum of digits gives 445740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445741) by changing a digit.

445740 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19369 + ... + 19391.

It is an arithmetic number, because the mean of its divisors is an integer number (15120).

2⁴⁴⁵⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725760).

445740 is an abundant number, since it is smaller than the sum of its proper divisors (1005780).

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

445740 is a wasteful number, since it uses less digits than its factorization.

445740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 445740 is about 667.6376262614. The cubic root of 445740 is about 76.3883629471.

The spelling of 445740 in words is "four hundred forty-five thousand, seven hundred forty".