8109312 has 36 divisors (see below), whose sum is σ = 21584640. Its totient is φ = 2702848.

The previous prime is 8109307. The next prime is 8109319. The reversal of 8109312 is 2139018.

It is a super-2 number, since 2×8109312² = 131521882226688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8109319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4512 + ... + 6047.

Almost surely, 2^8109312 is an apocalyptic number.

It is an amenable number.

8109312 is an abundant number, since it is smaller than the sum of its proper divisors (13475328).

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

8109312 is a wasteful number, since it uses less digits than its factorization.

8109312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10578 (or 10564 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 8109312 is about 2847.6853758799. The cubic root of 8109312 is about 200.9068155471.

The spelling of 8109312 in words is "eight million, one hundred nine thousand, three hundred twelve".