487809540 has 120 divisors (see below), whose sum is σ = 1542976512. Its totient is φ = 129003840.

The previous prime is 487809533. The next prime is 487809563. The reversal of 487809540 is 45908784.

487809540 is a `hidden beast` number, since 487 + 80 + 95 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 204555 + ... + 206925.

Almost surely, 2^487809540 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 487809540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (771488256).

487809540 is an abundant number, since it is smaller than the sum of its proper divisors (1055166972).

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

487809540 is a wasteful number, since it uses less digits than its factorization.

487809540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2519 (or 2508 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 487809540 is about 22086.4107541266. The cubic root of 487809540 is about 787.1969990776.

The spelling of 487809540 in words is "four hundred eighty-seven million, eight hundred nine thousand, five hundred forty".