8271240 has 32 divisors (see below), whose sum is σ = 24814080. Its totient is φ = 2205632.

The previous prime is 8271227. The next prime is 8271257. The reversal of 8271240 is 421728.

8271240 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×8271240² = 136826822275200, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 8271240.

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, 34344 + ... + 34583.

It is an arithmetic number, because the mean of its divisors is an integer number (775440).

Almost surely, 2^8271240 is an apocalyptic number.

It is an amenable number.

8271240 is an abundant number, since it is smaller than the sum of its proper divisors (16542840).

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

8271240 is a wasteful number, since it uses less digits than its factorization.

8271240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68941 (or 68937 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 8271240 is about 2875.9763559529. The cubic root of 8271240 is about 202.2352583652.

Adding to 8271240 its reverse (421728), we get a palindrome (8692968).

The spelling of 8271240 in words is "eight million, two hundred seventy-one thousand, two hundred forty".