8141640 has 128 divisors (see below), whose sum is σ = 27941760. Its totient is φ = 1880064.

The previous prime is 8141611. The next prime is 8141659. The reversal of 8141640 is 461418.

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 8141640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26367 + ... + 26673.

It is an arithmetic number, because the mean of its divisors is an integer number (218295).

Almost surely, 2^8141640 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 8141640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13970880).

8141640 is an abundant number, since it is smaller than the sum of its proper divisors (19800120).

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

8141640 is a wasteful number, since it uses less digits than its factorization.

8141640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 8141640 is about 2853.3559189137. The cubic root of 8141640 is about 201.1734351188.

The spelling of 8141640 in words is "eight million, one hundred forty-one thousand, six hundred forty".