129827832 has 16 divisors (see below), whose sum is σ = 324569640. Its totient is φ = 43275936.

The previous prime is 129827813. The next prime is 129827849. The reversal of 129827832 is 238728921.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2704723 + ... + 2704770.

Almost surely, 2^129827832 is an apocalyptic number.

129827832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129827832 is an abundant number, since it is smaller than the sum of its proper divisors (194741808).

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

129827832 is a wasteful number, since it uses less digits than its factorization.

129827832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5409502 (or 5409498 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 129827832 is about 11394.2016833124. The cubic root of 129827832 is about 506.3559702565.

The spelling of 129827832 in words is "one hundred twenty-nine million, eight hundred twenty-seven thousand, eight hundred thirty-two".