481640540 has 24 divisors (see below), whose sum is σ = 1012480560. Its totient is φ = 192459008.

The previous prime is 481640513. The next prime is 481640543. The reversal of 481640540 is 45046184.

It is a junction number, because it is equal to n+sod(n) for n = 481640497 and 481640506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481640543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8564 + ... + 32196.

It is an arithmetic number, because the mean of its divisors is an integer number (42186690).

Almost surely, 2^481640540 is an apocalyptic number.

It is an amenable number.

481640540 is an abundant number, since it is smaller than the sum of its proper divisors (530840020).

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

481640540 is a wasteful number, since it uses less digits than its factorization.

481640540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24661 (or 24659 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 481640540 is about 21946.3103960552. The cubic root of 481640540 is about 783.8645273869.

The spelling of 481640540 in words is "four hundred eighty-one million, six hundred forty thousand, five hundred forty".