12429680 has 20 divisors (see below), whose sum is σ = 28899192. Its totient is φ = 4971840.

The previous prime is 12429679. The next prime is 12429689. The reversal of 12429680 is 8692421.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12429689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77606 + ... + 77765.

Almost surely, 2^12429680 is an apocalyptic number.

12429680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12429680 is an abundant number, since it is smaller than the sum of its proper divisors (16469512).

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

12429680 is a wasteful number, since it uses less digits than its factorization.

12429680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155384 (or 155378 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 12429680 is about 3525.5751303865. The cubic root of 12429680 is about 231.6434276731.

The spelling of 12429680 in words is "twelve million, four hundred twenty-nine thousand, six hundred eighty".