8131984 has 40 divisors (see below), whose sum is σ = 19070208. Its totient is φ = 3279360.

The previous prime is 8131969. The next prime is 8131993. The reversal of 8131984 is 4891318.

It is a happy number.

It is a super-2 number, since 2×8131984² = 132258327552512, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232 + ... + 4039.

Almost surely, 2^8131984 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 8131984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9535104).

8131984 is an abundant number, since it is smaller than the sum of its proper divisors (10938224).

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

8131984 is a wasteful number, since it uses less digits than its factorization.

8131984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4303 (or 4297 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The square root of 8131984 is about 2851.6633742432. The cubic root of 8131984 is about 201.0938729690.

The spelling of 8131984 in words is "eight million, one hundred thirty-one thousand, nine hundred eighty-four".