445480980 has 96 divisors (see below), whose sum is σ = 1445713920. Its totient is φ = 100383360.

The previous prime is 445480979. The next prime is 445480991. The reversal of 445480980 is 89084544.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22351 + ... + 37289.

It is an arithmetic number, because the mean of its divisors is an integer number (15059520).

Almost surely, 2^445480980 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 445480980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (722856960).

445480980 is an abundant number, since it is smaller than the sum of its proper divisors (1000232940).

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

445480980 is a wasteful number, since it uses less digits than its factorization.

445480980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15029 (or 15027 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 445480980 is about 21106.4203502157. The cubic root of 445480980 is about 763.7356362643.

The spelling of 445480980 in words is "four hundred forty-five million, four hundred eighty thousand, nine hundred eighty".