445778872 has 96 divisors (see below), whose sum is σ = 1077217920. Its totient is φ = 170976960.

The previous prime is 445778869. The next prime is 445778881. The reversal of 445778872 is 278877544.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 288133 + ... + 289675.

It is an arithmetic number, because the mean of its divisors is an integer number (11221020).

Almost surely, 2^445778872 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 445778872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (538608960).

445778872 is an abundant number, since it is smaller than the sum of its proper divisors (631439048).

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

445778872 is a wasteful number, since it uses less digits than its factorization.

445778872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641 (or 1630 counting only the distinct ones).

The product of its digits is 3512320, while the sum is 52.

The square root of 445778872 is about 21113.4760757200. The cubic root of 445778872 is about 763.9058343597.

The spelling of 445778872 in words is "four hundred forty-five million, seven hundred seventy-eight thousand, eight hundred seventy-two".