485581840 has 40 divisors (see below), whose sum is σ = 1131677568. Its totient is φ = 193768320.

The previous prime is 485581823. The next prime is 485581847. The reversal of 485581840 is 48185584.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (485581847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27439 + ... + 41521.

Almost surely, 2^485581840 is an apocalyptic number.

485581840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

485581840 is an abundant number, since it is smaller than the sum of its proper divisors (646095728).

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

485581840 is a wasteful number, since it uses less digits than its factorization.

485581840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14527 (or 14521 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 43.

The square root of 485581840 is about 22035.9215827249. The cubic root of 485581840 is about 785.9968619505.

The spelling of 485581840 in words is "four hundred eighty-five million, five hundred eighty-one thousand, eight hundred forty".