12956240 has 40 divisors (see below), whose sum is σ = 32863968. Its totient is φ = 4711040.

The previous prime is 12956191. The next prime is 12956249. The reversal of 12956240 is 4265921.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12956249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6482 + ... + 8241.

Almost surely, 2^12956240 is an apocalyptic number.

12956240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12956240 is an abundant number, since it is smaller than the sum of its proper divisors (19907728).

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

12956240 is a wasteful number, since it uses less digits than its factorization.

12956240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14747 (or 14741 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 12956240 is about 3599.4777398951. The cubic root of 12956240 is about 234.8693403743.

The spelling of 12956240 in words is "twelve million, nine hundred fifty-six thousand, two hundred forty".