12741520 has 40 divisors (see below), whose sum is σ = 32319360. Its totient is φ = 4632960.

The previous prime is 12741511. The next prime is 12741523. The reversal of 12741520 is 2514721.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 12741491 and 12741500.

It is not an unprimeable number, because it can be changed into a prime (12741523) 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, 6360 + ... + 8119.

It is an arithmetic number, because the mean of its divisors is an integer number (807984).

Almost surely, 2^12741520 is an apocalyptic number.

12741520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12741520 is an abundant number, since it is smaller than the sum of its proper divisors (19577840).

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

12741520 is a wasteful number, since it uses less digits than its factorization.

12741520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14503 (or 14497 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 12741520 is about 3569.5265792539. The cubic root of 12741520 is about 233.5646323199.

The spelling of 12741520 in words is "twelve million, seven hundred forty-one thousand, five hundred twenty".