8131860 has 144 divisors (see below), whose sum is σ = 28365120. Its totient is φ = 1918080.

The previous prime is 8131853. The next prime is 8131873. The reversal of 8131860 is 681318.

It is a super-2 number, since 2×8131860² = 132254294119200, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 219762 + ... + 219798.

It is an arithmetic number, because the mean of its divisors is an integer number (196980).

Almost surely, 2^8131860 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 8131860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14182560).

8131860 is an abundant number, since it is smaller than the sum of its proper divisors (20233260).

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

8131860 is a wasteful number, since it uses less digits than its factorization.

8131860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 8131860 is about 2851.6416324637. The cubic root of 8131860 is about 201.0928508417.

The spelling of 8131860 in words is "eight million, one hundred thirty-one thousand, eight hundred sixty".