445730688 has 160 divisors (see below), whose sum is σ = 1428956760. Its totient is φ = 137106432.

The previous prime is 445730683. The next prime is 445730713. The reversal of 445730688 is 886037544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445730683) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 133131 + ... + 136437.

Almost surely, 2^445730688 is an apocalyptic number.

445730688 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445730688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (714478380).

445730688 is an abundant number, since it is smaller than the sum of its proper divisors (983226072).

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

445730688 is a wasteful number, since it uses less digits than its factorization.

445730688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3346 (or 3325 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The square root of 445730688 is about 21112.3349727120. The cubic root of 445730688 is about 763.8783099769.

The spelling of 445730688 in words is "four hundred forty-five million, seven hundred thirty thousand, six hundred eighty-eight".