447266380 has 48 divisors (see below), whose sum is σ = 1034843040. Its totient is φ = 161024000.

The previous prime is 447266359. The next prime is 447266381. The reversal of 447266380 is 83662744.

447266380 = 303² + 304² + ... + 1110².

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (447266381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12156 + ... + 32284.

It is an arithmetic number, because the mean of its divisors is an integer number (21559230).

Almost surely, 2^447266380 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 447266380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (517421520).

447266380 is an abundant number, since it is smaller than the sum of its proper divisors (587576660).

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

447266380 is a wasteful number, since it uses less digits than its factorization.

447266380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20250 (or 20248 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The square root of 447266380 is about 21148.6732444378. The cubic root of 447266380 is about 764.7545768899.

The spelling of 447266380 in words is "four hundred forty-seven million, two hundred sixty-six thousand, three hundred eighty".