12744420 has 48 divisors (see below), whose sum is σ = 38431680. Its totient is φ = 3136896.

The previous prime is 12744419. The next prime is 12744437. The reversal of 12744420 is 2444721.

12744420 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12744420² = 324840482272800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7390 + ... + 8949.

It is an arithmetic number, because the mean of its divisors is an integer number (800660).

Almost surely, 2^12744420 is an apocalyptic number.

12744420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12744420 is an abundant number, since it is smaller than the sum of its proper divisors (25687260).

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

12744420 is a wasteful number, since it uses less digits than its factorization.

12744420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16364 (or 16362 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 12744420 is about 3569.9327724763. The cubic root of 12744420 is about 233.5823509294.

The spelling of 12744420 in words is "twelve million, seven hundred forty-four thousand, four hundred twenty".