447030640 has 80 divisors (see below), whose sum is σ = 1257723072. Its totient is φ = 144248832.

The previous prime is 447030637. The next prime is 447030721. The reversal of 447030640 is 46030744.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 447030599 and 447030608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13959 + ... + 32998.

Almost surely, 2^447030640 is an apocalyptic number.

447030640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

447030640 is an abundant number, since it is smaller than the sum of its proper divisors (810692432).

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

447030640 is a wasteful number, since it uses less digits than its factorization.

447030640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46994 (or 46988 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 447030640 is about 21143.0991105845. The cubic root of 447030640 is about 764.6201939396.

The spelling of 447030640 in words is "four hundred forty-seven million, thirty thousand, six hundred forty".