447728118 has 16 divisors (see below), whose sum is σ = 917297136. Its totient is φ = 145602560.

The previous prime is 447728111. The next prime is 447728131. The reversal of 447728118 is 811827744.

It is a self number, because there is not a number n which added to its sum of digits gives 447728118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447728111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 909771 + ... + 910262.

It is an arithmetic number, because the mean of its divisors is an integer number (57331071).

Almost surely, 2^447728118 is an apocalyptic number.

447728118 is an abundant number, since it is smaller than the sum of its proper divisors (469569018).

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

447728118 is a wasteful number, since it uses less digits than its factorization.

447728118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820079.

The product of its digits is 100352, while the sum is 42.

The square root of 447728118 is about 21159.5869052305. The cubic root of 447728118 is about 765.0176526321.

The spelling of 447728118 in words is "four hundred forty-seven million, seven hundred twenty-eight thousand, one hundred eighteen".