12743472 has 160 divisors (see below), whose sum is σ = 41997312. Its totient is φ = 3244032.

The previous prime is 12743453. The next prime is 12743477. The reversal of 12743472 is 27434721.

It is a super-2 number, since 2×12743472² = 324792157229568, which contains 22 as substring.

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

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12743477) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131328 + ... + 131424.

Almost surely, 2^12743472 is an apocalyptic number.

12743472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12743472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20998656).

12743472 is an abundant number, since it is smaller than the sum of its proper divisors (29253840).

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

12743472 is a wasteful number, since it uses less digits than its factorization.

12743472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 149 counting only the distinct ones).

The product of its digits is 9408, while the sum is 30.

The square root of 12743472 is about 3569.7999943974. The cubic root of 12743472 is about 233.5765590728.

The spelling of 12743472 in words is "twelve million, seven hundred forty-three thousand, four hundred seventy-two".