445732740 has 96 divisors (see below), whose sum is σ = 1397531520. Its totient is φ = 117936000.

The previous prime is 445732739. The next prime is 445732757. The reversal of 445732740 is 47237544.

445732740 is a `hidden beast` number, since 44 + 573 + 2 + 7 + 40 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 445732695 and 445732704.

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 31 ways as a sum of consecutive naturals, for example, 67590 + ... + 73890.

It is an arithmetic number, because the mean of its divisors is an integer number (14557620).

Almost surely, 2^445732740 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 445732740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (698765760).

445732740 is an abundant number, since it is smaller than the sum of its proper divisors (951798780).

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

445732740 is a wasteful number, since it uses less digits than its factorization.

445732740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6450 (or 6442 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 36.

The square root of 445732740 is about 21112.3835698388. The cubic root of 445732740 is about 763.8794821914.

The spelling of 445732740 in words is "four hundred forty-five million, seven hundred thirty-two thousand, seven hundred forty".