12734720 has 36 divisors (see below), whose sum is σ = 30506700. Its totient is φ = 5093376.

The previous prime is 12734713. The next prime is 12734749. The reversal of 12734720 is 2743721.

It can be written as a sum of positive squares in 2 ways, for example, as 4804864 + 7929856 = 2192^2 + 2816^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12734720.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3695 + ... + 6254.

Almost surely, 2^12734720 is an apocalyptic number.

12734720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12734720 is an abundant number, since it is smaller than the sum of its proper divisors (17771980).

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

12734720 is an frugal number, since it uses more digits than its factorization.

12734720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9970 (or 9956 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 12734720 is about 3568.5739448693. The cubic root of 12734720 is about 233.5230746898.

Subtracting from 12734720 its reverse (2743721), we obtain a palindrome (9990999).

The spelling of 12734720 in words is "twelve million, seven hundred thirty-four thousand, seven hundred twenty".