445244680 has 64 divisors (see below), whose sum is σ = 1046520000. Its totient is φ = 170313984.

The previous prime is 445244669. The next prime is 445244713. The reversal of 445244680 is 86442544.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (37).

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, 84771 + ... + 89869.

It is an arithmetic number, because the mean of its divisors is an integer number (16351875).

Almost surely, 2^445244680 is an apocalyptic number.

445244680 is a gapful number since it is divisible by the number (40) 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 445244680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (523260000).

445244680 is an abundant number, since it is smaller than the sum of its proper divisors (601275320).

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

445244680 is a wasteful number, since it uses less digits than its factorization.

445244680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5206 (or 5202 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 37.

The square root of 445244680 is about 21100.8217849448. The cubic root of 445244680 is about 763.6005742692.

The spelling of 445244680 in words is "four hundred forty-five million, two hundred forty-four thousand, six hundred eighty".