447712428 has 48 divisors (see below), whose sum is σ = 1117706240. Its totient is φ = 139060800.

The previous prime is 447712403. The next prime is 447712429. The reversal of 447712428 is 824217744.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (447712429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2188 + ... + 30003.

Almost surely, 2^447712428 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 447712428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (558853120).

447712428 is an abundant number, since it is smaller than the sum of its proper divisors (669993812).

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

447712428 is a wasteful number, since it uses less digits than its factorization.

447712428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32278 (or 32276 counting only the distinct ones).

The product of its digits is 100352, while the sum is 39.

The square root of 447712428 is about 21159.2161480524. The cubic root of 447712428 is about 765.0087162064.

The spelling of 447712428 in words is "four hundred forty-seven million, seven hundred twelve thousand, four hundred twenty-eight".