8487840 has 48 divisors (see below), whose sum is σ = 26738208. Its totient is φ = 2263296.

The previous prime is 8487827. The next prime is 8487859. The reversal of 8487840 is 487848.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8362 + ... + 9321.

It is an arithmetic number, because the mean of its divisors is an integer number (557046).

Almost surely, 2^8487840 is an apocalyptic number.

8487840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8487840 is an abundant number, since it is smaller than the sum of its proper divisors (18250368).

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

8487840 is a wasteful number, since it uses less digits than its factorization.

8487840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17701 (or 17693 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 39.

The square root of 8487840 is about 2913.3897782480. The cubic root of 8487840 is about 203.9853891881.

The spelling of 8487840 in words is "eight million, four hundred eighty-seven thousand, eight hundred forty".