12147744 has 48 divisors (see below), whose sum is σ = 36445248. Its totient is φ = 3470592.

The previous prime is 12147743. The next prime is 12147769. The reversal of 12147744 is 44774121.

It is a tau number, because it is divible by the number of its divisors (48).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12147743) 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, 8367 + ... + 9710.

It is an arithmetic number, because the mean of its divisors is an integer number (759276).

Almost surely, 2^12147744 is an apocalyptic number.

12147744 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12147744 is an abundant number, since it is smaller than the sum of its proper divisors (24297504).

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

12147744 is a wasteful number, since it uses less digits than its factorization.

12147744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18097 (or 18089 counting only the distinct ones).

The product of its digits is 6272, while the sum is 30.

The square root of 12147744 is about 3485.3613872883. The cubic root of 12147744 is about 229.8786000795.

The spelling of 12147744 in words is "twelve million, one hundred forty-seven thousand, seven hundred forty-four".