8021312 has 56 divisors (see below), whose sum is σ = 17751552. Its totient is φ = 3571200.

The previous prime is 8021291. The next prime is 8021323. The reversal of 8021312 is 2131208.

It is a congruent number.

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, 25637 + ... + 25947.

It is an arithmetic number, because the mean of its divisors is an integer number (316992).

Almost surely, 2^8021312 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 8021312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8875776).

8021312 is an abundant number, since it is smaller than the sum of its proper divisors (9730240).

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

8021312 is a wasteful number, since it uses less digits than its factorization.

8021312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 8021312 is about 2832.1920838813. The cubic root of 8021312 is about 200.1774425242.

The spelling of 8021312 in words is "eight million, twenty-one thousand, three hundred twelve".