12721752 has 32 divisors (see below), whose sum is σ = 35338800. Its totient is φ = 4240512.

The previous prime is 12721739. The next prime is 12721771. The reversal of 12721752 is 25712721.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29233 + ... + 29664.

Almost surely, 2^12721752 is an apocalyptic number.

12721752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12721752 is an abundant number, since it is smaller than the sum of its proper divisors (22617048).

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

12721752 is a wasteful number, since it uses less digits than its factorization.

12721752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58912 (or 58902 counting only the distinct ones).

The product of its digits is 1960, while the sum is 27.

The square root of 12721752 is about 3566.7565097719. The cubic root of 12721752 is about 233.4437808184.

The spelling of 12721752 in words is "twelve million, seven hundred twenty-one thousand, seven hundred fifty-two".