481664840 has 16 divisors (see below), whose sum is σ = 1083745980. Its totient is φ = 192665920.

The previous prime is 481664773. The next prime is 481664851. The reversal of 481664840 is 48466184.

It can be written as a sum of positive squares in 2 ways, for example, as 421973764 + 59691076 = 20542^2 + 7726^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6020771 + ... + 6020850.

Almost surely, 2^481664840 is an apocalyptic number.

481664840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

481664840 is an abundant number, since it is smaller than the sum of its proper divisors (602081140).

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

481664840 is a wasteful number, since it uses less digits than its factorization.

481664840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12041632 (or 12041628 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 41.

The square root of 481664840 is about 21946.8640128835. The cubic root of 481664840 is about 783.8777098236.

The spelling of 481664840 in words is "four hundred eighty-one million, six hundred sixty-four thousand, eight hundred forty".