129906496 has 56 divisors (see below), whose sum is σ = 277246080. Its totient is φ = 60198912.

The previous prime is 129906487. The next prime is 129906509. The reversal of 129906496 is 694609921.

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, 56016 + ... + 58288.

Almost surely, 2^129906496 is an apocalyptic number.

129906496 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 129906496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138623040).

129906496 is an abundant number, since it is smaller than the sum of its proper divisors (147339584).

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

129906496 is a wasteful number, since it uses less digits than its factorization.

129906496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351 (or 2341 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 129906496 is about 11397.6530917553. The cubic root of 129906496 is about 506.4582183474.

The spelling of 129906496 in words is "one hundred twenty-nine million, nine hundred six thousand, four hundred ninety-six".