447028168 has 8 divisors (see below), whose sum is σ = 838177830. Its totient is φ = 223514080.

The previous prime is 447028163. The next prime is 447028177. The reversal of 447028168 is 861820744.

It can be written as a sum of positive squares in only one way, i.e., 371024644 + 76003524 = 19262^2 + 8718^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 447028168.

It is not an unprimeable number, because it can be changed into a prime (447028163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27939253 + ... + 27939268.

Almost surely, 2^447028168 is an apocalyptic number.

It is an amenable number.

447028168 is a deficient number, since it is larger than the sum of its proper divisors (391149662).

447028168 is a wasteful number, since it uses less digits than its factorization.

447028168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55878527 (or 55878523 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 447028168 is about 21143.0406517133. The cubic root of 447028168 is about 764.6187845324.

The spelling of 447028168 in words is "four hundred forty-seven million, twenty-eight thousand, one hundred sixty-eight".