445231620 has 96 divisors (see below), whose sum is σ = 1389104640. Its totient is φ = 118391040.

The previous prime is 445231613. The next prime is 445231637. The reversal of 445231620 is 26132544.

445231620 is a `hidden beast` number, since 4 + 4 + 5 + 2 + 31 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231784 + ... + 233696.

It is an arithmetic number, because the mean of its divisors is an integer number (14469840).

Almost surely, 2^445231620 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 445231620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (694552320).

445231620 is an abundant number, since it is smaller than the sum of its proper divisors (943873020).

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

445231620 is a wasteful number, since it uses less digits than its factorization.

445231620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2362 (or 2354 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 445231620 is about 21100.5123160553. The cubic root of 445231620 is about 763.5931081714.

The spelling of 445231620 in words is "four hundred forty-five million, two hundred thirty-one thousand, six hundred twenty".