447118520 has 128 divisors (see below), whose sum is σ = 1088640000. Its totient is φ = 164946432.

The previous prime is 447118519. The next prime is 447118541. The reversal of 447118520 is 25811744.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3216611 + ... + 3216749.

It is an arithmetic number, because the mean of its divisors is an integer number (8505000).

Almost surely, 2^447118520 is an apocalyptic number.

447118520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 447118520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (544320000).

447118520 is an abundant number, since it is smaller than the sum of its proper divisors (641521480).

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

447118520 is a wasteful number, since it uses less digits than its factorization.

447118520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 447118520 is about 21145.1772279165. The cubic root of 447118520 is about 764.6702952183.

The spelling of 447118520 in words is "four hundred forty-seven million, one hundred eighteen thousand, five hundred twenty".