8126640 has 60 divisors (see below), whose sum is σ = 27294384. Its totient is φ = 2166912.

The previous prime is 8126617. The next prime is 8126647. The reversal of 8126640 is 466218.

8126640 is a `hidden beast` number, since 8 + 12 + 6 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is not an unprimeable number, because it can be changed into a prime (8126647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4924 + ... + 6363.

Almost surely, 2^8126640 is an apocalyptic number.

8126640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8126640 is an abundant number, since it is smaller than the sum of its proper divisors (19167744).

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

8126640 is a wasteful number, since it uses less digits than its factorization.

8126640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11306 (or 11297 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 8126640 is about 2850.7262232631. The cubic root of 8126640 is about 201.0498131533.

The spelling of 8126640 in words is "eight million, one hundred twenty-six thousand, six hundred forty".