445247320 has 48 divisors (see below), whose sum is σ = 1165371840. Its totient is φ = 152655552.

The previous prime is 445247303. The next prime is 445247321. The reversal of 445247320 is 23742544.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445247321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111624 + ... + 115543.

It is an arithmetic number, because the mean of its divisors is an integer number (24278580).

Almost surely, 2^445247320 is an apocalyptic number.

445247320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

445247320 is an abundant number, since it is smaller than the sum of its proper divisors (720124520).

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

445247320 is a wasteful number, since it uses less digits than its factorization.

445247320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227192 (or 227181 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 31.

The square root of 445247320 is about 21100.8843416573. The cubic root of 445247320 is about 763.6020834780.

Adding to 445247320 its reverse (23742544), we get a palindrome (468989864).

The spelling of 445247320 in words is "four hundred forty-five million, two hundred forty-seven thousand, three hundred twenty".