129532496 has 20 divisors (see below), whose sum is σ = 251864832. Its totient is φ = 64535136.

The previous prime is 129532493. The next prime is 129532511. The reversal of 129532496 is 694235921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129532493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9776 + ... + 18831.

Almost surely, 2^129532496 is an apocalyptic number.

129532496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129532496 is a deficient number, since it is larger than the sum of its proper divisors (122332336).

129532496 is a wasteful number, since it uses less digits than its factorization.

129532496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28898 (or 28892 counting only the distinct ones).

The product of its digits is 116640, while the sum is 41.

The square root of 129532496 is about 11381.2343794511. The cubic root of 129532496 is about 505.9717211461.

The spelling of 129532496 in words is "one hundred twenty-nine million, five hundred thirty-two thousand, four hundred ninety-six".