445905072 has 120 divisors (see below), whose sum is σ = 1330867200. Its totient is φ = 138962304.

The previous prime is 445905049. The next prime is 445905107. The reversal of 445905072 is 270509544.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215113 + ... + 217175.

It is an arithmetic number, because the mean of its divisors is an integer number (11090560).

Almost surely, 2^445905072 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 445905072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (665433600).

445905072 is an abundant number, since it is smaller than the sum of its proper divisors (884962128).

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

445905072 is a wasteful number, since it uses less digits than its factorization.

445905072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175 (or 2166 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 445905072 is about 21116.4644768010. The cubic root of 445905072 is about 763.9779148062.

The spelling of 445905072 in words is "four hundred forty-five million, nine hundred five thousand, seventy-two".