12747732 has 12 divisors (see below), whose sum is σ = 29744736. Its totient is φ = 4249240.

The previous prime is 12747703. The next prime is 12747751. The reversal of 12747732 is 23774721.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×12747732² = 325009342287648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12747693 and 12747702.

It is a congruent number.

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, 531144 + ... + 531167.

It is an arithmetic number, because the mean of its divisors is an integer number (2478728).

Almost surely, 2^12747732 is an apocalyptic number.

12747732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12747732 is an abundant number, since it is smaller than the sum of its proper divisors (16997004).

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

12747732 is a wasteful number, since it uses less digits than its factorization.

12747732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062318 (or 1062316 counting only the distinct ones).

The product of its digits is 16464, while the sum is 33.

The square root of 12747732 is about 3570.3966166240. The cubic root of 12747732 is about 233.6025835159.

The spelling of 12747732 in words is "twelve million, seven hundred forty-seven thousand, seven hundred thirty-two".