8713440 has 96 divisors (see below), whose sum is σ = 30512160. Its totient is φ = 2322432.

The previous prime is 8713433. The next prime is 8713447. The reversal of 8713440 is 443178.

It is an interprime number because it is at equal distance from previous prime (8713433) and next prime (8713447).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8713447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3312 + ... + 5328.

It is an arithmetic number, because the mean of its divisors is an integer number (317835).

Almost surely, 2^8713440 is an apocalyptic number.

8713440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8713440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15256080).

8713440 is an abundant number, since it is smaller than the sum of its proper divisors (21798720).

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

8713440 is a wasteful number, since it uses less digits than its factorization.

8713440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041 (or 2027 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 8713440 is about 2951.8536549091. The cubic root of 8713440 is about 205.7768658812.

The spelling of 8713440 in words is "eight million, seven hundred thirteen thousand, four hundred forty".