445680378 has 144 divisors (see below), whose sum is σ = 1202441760. Its totient is φ = 117936000.

The previous prime is 445680349. The next prime is 445680379. The reversal of 445680378 is 873086544.

It is not an unprimeable number, because it can be changed into a prime (445680379) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 635428 + ... + 636128.

It is an arithmetic number, because the mean of its divisors is an integer number (8350290).

Almost surely, 2^445680378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445680378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (601220880).

445680378 is an abundant number, since it is smaller than the sum of its proper divisors (756761382).

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

445680378 is a wasteful number, since it uses less digits than its factorization.

445680378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765 (or 749 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The square root of 445680378 is about 21111.1434555308. The cubic root of 445680378 is about 763.8495690317.

The spelling of 445680378 in words is "four hundred forty-five million, six hundred eighty thousand, three hundred seventy-eight".