8261340 has 48 divisors (see below), whose sum is σ = 23305632. Its totient is φ = 2186496.

The previous prime is 8261339. The next prime is 8261353. The reversal of 8261340 is 431628.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 8261340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8982 + ... + 9858.

It is an arithmetic number, because the mean of its divisors is an integer number (485534).

Almost surely, 2^8261340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8261340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11652816).

8261340 is an abundant number, since it is smaller than the sum of its proper divisors (15044292).

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

8261340 is a wasteful number, since it uses less digits than its factorization.

8261340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046 (or 1044 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 8261340 is about 2874.2546860012. The cubic root of 8261340 is about 202.1545397795.

Adding to 8261340 its reverse (431628), we get a palindrome (8692968).

The spelling of 8261340 in words is "eight million, two hundred sixty-one thousand, three hundred forty".