8143680 has 112 divisors (see below), whose sum is σ = 27432000. Its totient is φ = 2039808.

The previous prime is 8143657. The next prime is 8143687. The reversal of 8143680 is 863418.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8143687) 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, 16071 + ... + 16569.

Almost surely, 2^8143680 is an apocalyptic number.

8143680 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 8143680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13716000).

8143680 is an abundant number, since it is smaller than the sum of its proper divisors (19288320).

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

8143680 is a wasteful number, since it uses less digits than its factorization.

8143680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 8143680 is about 2853.7133703300. The cubic root of 8143680 is about 201.1902359736.

The spelling of 8143680 in words is "eight million, one hundred forty-three thousand, six hundred eighty".