445744536 has 64 divisors (see below), whose sum is σ = 1177144320. Its totient is φ = 140434560.

The previous prime is 445744511. The next prime is 445744571. The reversal of 445744536 is 635447544.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25026 + ... + 38958.

It is an arithmetic number, because the mean of its divisors is an integer number (18392880).

Almost surely, 2^445744536 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 445744536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (588572160).

445744536 is an abundant number, since it is smaller than the sum of its proper divisors (731399784).

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

445744536 is a wasteful number, since it uses less digits than its factorization.

445744536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14016 (or 14012 counting only the distinct ones).

The product of its digits is 806400, while the sum is 42.

The square root of 445744536 is about 21112.6629300996. The cubic root of 445744536 is about 763.8862206410.

The spelling of 445744536 in words is "four hundred forty-five million, seven hundred forty-four thousand, five hundred thirty-six".