8091378 has 48 divisors (see below), whose sum is σ = 18813600. Its totient is φ = 2505600.

The previous prime is 8091367. The next prime is 8091409. The reversal of 8091378 is 8731908.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19978 + ... + 20378.

It is an arithmetic number, because the mean of its divisors is an integer number (391950).

Almost surely, 2^8091378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8091378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9406800).

8091378 is an abundant number, since it is smaller than the sum of its proper divisors (10722222).

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

8091378 is a wasteful number, since it uses less digits than its factorization.

8091378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487 (or 484 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 8091378 is about 2844.5347598509. The cubic root of 8091378 is about 200.7586023080.

It can be divided in two parts, 809 and 1378, that added together give a 7-th power (2187 = 3⁷).

The spelling of 8091378 in words is "eight million, ninety-one thousand, three hundred seventy-eight".