8128278 has 48 divisors (see below), whose sum is σ = 18903456. Its totient is φ = 2515200.

The previous prime is 8128259. The next prime is 8128319. The reversal of 8128278 is 8728218.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30775 + ... + 31037.

It is an arithmetic number, because the mean of its divisors is an integer number (393822).

Almost surely, 2^8128278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8128278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9451728).

8128278 is an abundant number, since it is smaller than the sum of its proper divisors (10775178).

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

8128278 is a wasteful number, since it uses less digits than its factorization.

8128278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389 (or 386 counting only the distinct ones).

The product of its digits is 14336, while the sum is 36.

The square root of 8128278 is about 2851.0135040017. The cubic root of 8128278 is about 201.0633200668.

The spelling of 8128278 in words is "eight million, one hundred twenty-eight thousand, two hundred seventy-eight".