447576780 has 144 divisors (see below), whose sum is σ = 1521434880. Its totient is φ = 97840512.

The previous prime is 447576769. The next prime is 447576821. The reversal of 447576780 is 87675744.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64311 + ... + 70929.

It is an arithmetic number, because the mean of its divisors is an integer number (10565520).

Almost surely, 2^447576780 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 447576780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (760717440).

447576780 is an abundant number, since it is smaller than the sum of its proper divisors (1073858100).

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

447576780 is a wasteful number, since it uses less digits than its factorization.

447576780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6668 (or 6659 counting only the distinct ones).

The product of its (nonzero) digits is 1317120, while the sum is 48.

The square root of 447576780 is about 21156.0104934744. The cubic root of 447576780 is about 764.9314475715.

The spelling of 447576780 in words is "four hundred forty-seven million, five hundred seventy-six thousand, seven hundred eighty".