12732740 has 36 divisors (see below), whose sum is σ = 27729156. Its totient is φ = 4910976.

The previous prime is 12732739. The next prime is 12732743. The reversal of 12732740 is 4723721.

It can be written as a sum of positive squares in 6 ways, for example, as 2116 + 12730624 = 46^2 + 3568^2 .

It is not an unprimeable number, because it can be changed into a prime (12732743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16442 + ... + 17198.

Almost surely, 2^12732740 is an apocalyptic number.

12732740 is a gapful number since it is divisible by the number (10) 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 12732740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13864578).

12732740 is an abundant number, since it is smaller than the sum of its proper divisors (14996416).

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

12732740 is a wasteful number, since it uses less digits than its factorization.

12732740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824 (or 793 counting only the distinct ones).

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

The square root of 12732740 is about 3568.2965123431. The cubic root of 12732740 is about 233.5109713049.

The spelling of 12732740 in words is "twelve million, seven hundred thirty-two thousand, seven hundred forty".