12659040 has 144 divisors (see below), whose sum is σ = 44226000. Its totient is φ = 3296256.

The previous prime is 12659029. The next prime is 12659057. The reversal of 12659040 is 4095621.

12659040 is a `hidden beast` number, since 1 + 2 + 659 + 0 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a junction number, because it is equal to n+sod(n) for n = 12658995 and 12659013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84886 + ... + 85034.

It is an arithmetic number, because the mean of its divisors is an integer number (307125).

Almost surely, 2^12659040 is an apocalyptic number.

12659040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12659040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22113000).

12659040 is an abundant number, since it is smaller than the sum of its proper divisors (31566960).

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

12659040 is a wasteful number, since it uses less digits than its factorization.

12659040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 12659040 is about 3557.9544685114. The cubic root of 12659040 is about 233.0595609920.

The spelling of 12659040 in words is "twelve million, six hundred fifty-nine thousand, forty".