12729696 has 96 divisors (see below), whose sum is σ = 40239360. Its totient is φ = 3442176.

The previous prime is 12729679. The next prime is 12729697. The reversal of 12729696 is 69692721.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12729697) 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, 12270 + ... + 13266.

It is an arithmetic number, because the mean of its divisors is an integer number (419160).

Almost surely, 2^12729696 is an apocalyptic number.

12729696 is a gapful number since it is divisible by the number (16) 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 12729696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20119680).

12729696 is an abundant number, since it is smaller than the sum of its proper divisors (27509664).

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

12729696 is a wasteful number, since it uses less digits than its factorization.

12729696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036 (or 1028 counting only the distinct ones).

The product of its digits is 81648, while the sum is 42.

The square root of 12729696 is about 3567.8699527870. The cubic root of 12729696 is about 233.4923614312.

The spelling of 12729696 in words is "twelve million, seven hundred twenty-nine thousand, six hundred ninety-six".