445878 has 32 divisors (see below), whose sum is σ = 1036800. Its totient is φ = 141768.

The previous prime is 445877. The next prime is 445883. The reversal of 445878 is 878544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445871) 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, 1063 + ... + 1421.

It is an arithmetic number, because the mean of its divisors is an integer number (32400).

2⁴⁴⁵⁸⁷⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (518400).

445878 is an abundant number, since it is smaller than the sum of its proper divisors (590922).

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

445878 is a wasteful number, since it uses less digits than its factorization.

445878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393 (or 387 counting only the distinct ones).

The product of its digits is 35840, while the sum is 36.

The square root of 445878 is about 667.7409677412. The cubic root of 445878 is about 76.3962453497.

The spelling of 445878 in words is "four hundred forty-five thousand, eight hundred seventy-eight".