12914640 has 100 divisors (see below), whose sum is σ = 44876964. Its totient is φ = 3442176.

The previous prime is 12914639. The next prime is 12914651. The reversal of 12914640 is 4641921.

12914640 is a `hidden beast` number, since 1 + 2 + 9 + 14 + 640 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7096896 + 5817744 = 2664^2 + 2412^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 5484 + ... + 7476.

Almost surely, 2^12914640 is an apocalyptic number.

12914640 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 12914640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22438482).

12914640 is an abundant number, since it is smaller than the sum of its proper divisors (31962324).

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

12914640 is a wasteful number, since it uses less digits than its factorization.

12914640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018 (or 2003 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 12914640 is about 3593.6944778320. The cubic root of 12914640 is about 234.6176973979.

The spelling of 12914640 in words is "twelve million, nine hundred fourteen thousand, six hundred forty".