8271280 has 20 divisors (see below), whose sum is σ = 19230912. Its totient is φ = 3308480.

The previous prime is 8271271. The next prime is 8271281. The reversal of 8271280 is 821728.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (8271281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51616 + ... + 51775.

Almost surely, 2^8271280 is an apocalyptic number.

8271280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8271280 is an abundant number, since it is smaller than the sum of its proper divisors (10959632).

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

8271280 is a wasteful number, since it uses less digits than its factorization.

8271280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103404 (or 103398 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 8271280 is about 2875.9833101046. The cubic root of 8271280 is about 202.2355843702.

The spelling of 8271280 in words is "eight million, two hundred seventy-one thousand, two hundred eighty".