445480 has 64 divisors (see below), whose sum is σ = 1203840. Its totient is φ = 145152.

The previous prime is 445477. The next prime is 445499. The reversal of 445480 is 84544.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10339 + ... + 10381.

It is an arithmetic number, because the mean of its divisors is an integer number (18810).

2⁴⁴⁵⁴⁸⁰ is an apocalyptic number.

445480 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 445480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (601920).

445480 is an abundant number, since it is smaller than the sum of its proper divisors (758360).

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

445480 is a wasteful number, since it uses less digits than its factorization.

445480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 445480 is about 667.4428814513. The cubic root of 445480 is about 76.3735076224.

The spelling of 445480 in words is "four hundred forty-five thousand, four hundred eighty".