447681240 has 48 divisors (see below), whose sum is σ = 1454965200. Its totient is φ = 119381568.

The previous prime is 447681239. The next prime is 447681319. The reversal of 447681240 is 42186744.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 447681195 and 447681204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 621420 + ... + 622139.

It is an arithmetic number, because the mean of its divisors is an integer number (30311775).

Almost surely, 2^447681240 is an apocalyptic number.

447681240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

447681240 is an abundant number, since it is smaller than the sum of its proper divisors (1007283960).

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

447681240 is a wasteful number, since it uses less digits than its factorization.

447681240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243576 (or 1243569 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 447681240 is about 21158.4791513946. The cubic root of 447681240 is about 764.9909520909.

The spelling of 447681240 in words is "four hundred forty-seven million, six hundred eighty-one thousand, two hundred forty".