445880 has 32 divisors (see below), whose sum is σ = 1023840. Its totient is φ = 174720.

The previous prime is 445877. The next prime is 445883. The reversal of 445880 is 88544.

It is an interprime number because it is at equal distance from previous prime (445877) and next prime (445883).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445883) by changing a digit.

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, 2762 + ... + 2918.

It is an arithmetic number, because the mean of its divisors is an integer number (31995).

2⁴⁴⁵⁸⁸⁰ is an apocalyptic number.

445880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (511920).

445880 is an abundant number, since it is smaller than the sum of its proper divisors (577960).

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

445880 is a wasteful number, since it uses less digits than its factorization.

445880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 445880 is about 667.7424653263. The cubic root of 445880 is about 76.3963595754.

The spelling of 445880 in words is "four hundred forty-five thousand, eight hundred eighty".