8713840 has 20 divisors (see below), whose sum is σ = 20259864. Its totient is φ = 3485504.

The previous prime is 8713823. The next prime is 8713867. The reversal of 8713840 is 483178.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 54382 + ... + 54541.

Almost surely, 2^8713840 is an apocalyptic number.

8713840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8713840 is an abundant number, since it is smaller than the sum of its proper divisors (11546024).

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

8713840 is a wasteful number, since it uses less digits than its factorization.

8713840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108936 (or 108930 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 8713840 is about 2951.9214081679. The cubic root of 8713840 is about 205.7800146371.

It can be divided in two parts, 87138 and 40, that added together give a palindrome (87178).

The spelling of 8713840 in words is "eight million, seven hundred thirteen thousand, eight hundred forty".