445728822680 has 128 divisors (see below), whose sum is σ = 1075992292800. Its totient is φ = 166132546560.

The previous prime is 445728822647. The next prime is 445728822719. The reversal of 445728822680 is 86228827544.

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, 16722644 + ... + 16749276.

Almost surely, 2^445728822680 is an apocalyptic number.

445728822680 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 445728822680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (537996146400).

445728822680 is an abundant number, since it is smaller than the sum of its proper divisors (630263470120).

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

445728822680 is a wasteful number, since it uses less digits than its factorization.

445728822680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26762 (or 26720 counting only the distinct ones).

The product of its (nonzero) digits is 13762560, while the sum is 56.

The spelling of 445728822680 in words is "four hundred forty-five billion, seven hundred twenty-eight million, eight hundred twenty-two thousand, six hundred eighty".