12729501 has 16 divisors (see below), whose sum is σ = 18928000. Its totient is φ = 8455104.

The previous prime is 12729491. The next prime is 12729503. The reversal of 12729501 is 10592721.

12729501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12729501 - 2¹⁹ = 12205213 is a prime.

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

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12729503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8400 + ... + 9798.

It is an arithmetic number, because the mean of its divisors is an integer number (1183000).

Almost surely, 2^12729501 is an apocalyptic number.

It is an amenable number.

12729501 is a deficient number, since it is larger than the sum of its proper divisors (6198499).

12729501 is a wasteful number, since it uses less digits than its factorization.

12729501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745 (or 1739 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 12729501 is about 3567.8426254531. The cubic root of 12729501 is about 233.4911691733.

The spelling of 12729501 in words is "twelve million, seven hundred twenty-nine thousand, five hundred one".