8261140 has 24 divisors (see below), whose sum is σ = 18103680. Its totient is φ = 3160608.

The previous prime is 8261111. The next prime is 8261147. The reversal of 8261140 is 411628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8261147) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8520 + ... + 9439.

It is an arithmetic number, because the mean of its divisors is an integer number (754320).

Almost surely, 2^8261140 is an apocalyptic number.

It is an amenable number.

8261140 is an abundant number, since it is smaller than the sum of its proper divisors (9842540).

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

8261140 is a wasteful number, since it uses less digits than its factorization.

8261140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17991 (or 17989 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 8261140 is about 2874.2198941626. The cubic root of 8261140 is about 202.1529084366.

Adding to 8261140 its reverse (411628), we get a palindrome (8672768).

The spelling of 8261140 in words is "eight million, two hundred sixty-one thousand, one hundred forty".