445805712 has 120 divisors (see below), whose sum is σ = 1366305408. Its totient is φ = 134572800.

The previous prime is 445805693. The next prime is 445805713. The reversal of 445805712 is 217508544.

445805712 is a `hidden beast` number, since 4 + 4 + 5 + 80 + 571 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (445805713) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 682378 + ... + 683030.

Almost surely, 2^445805712 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 445805712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (683152704).

445805712 is an abundant number, since it is smaller than the sum of its proper divisors (920499696).

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

445805712 is a wasteful number, since it uses less digits than its factorization.

445805712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109 (or 1100 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 445805712 is about 21114.1116791590. Note that the first 3 decimals coincide. The cubic root of 445805712 is about 763.9211654446.

The spelling of 445805712 in words is "four hundred forty-five million, eight hundred five thousand, seven hundred twelve".