12740740 has 24 divisors (see below), whose sum is σ = 26953920. Its totient is φ = 5058528.

The previous prime is 12740719. The next prime is 12740747. The reversal of 12740740 is 4704721.

It is not an unprimeable number, because it can be changed into a prime (12740747) 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, 489 + ... + 5071.

It is an arithmetic number, because the mean of its divisors is an integer number (1123080).

Almost surely, 2^12740740 is an apocalyptic number.

12740740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12740740 is an abundant number, since it is smaller than the sum of its proper divisors (14213180).

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

12740740 is a wasteful number, since it uses less digits than its factorization.

12740740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4731 (or 4729 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 12740740 is about 3569.4173193954. The cubic root of 12740740 is about 233.5598661661.

The spelling of 12740740 in words is "twelve million, seven hundred forty thousand, seven hundred forty".