129795912 has 64 divisors (see below), whose sum is σ = 362232000. Its totient is φ = 43062912.

The previous prime is 129795893. The next prime is 129795931. The reversal of 129795912 is 219597921.

It is an interprime number because it is at equal distance from previous prime (129795893) and next prime (129795931).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49039 + ... + 51617.

It is an arithmetic number, because the mean of its divisors is an integer number (5659875).

Almost surely, 2^129795912 is an apocalyptic number.

129795912 is a gapful number since it is divisible by the number (12) 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 129795912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181116000).

129795912 is an abundant number, since it is smaller than the sum of its proper divisors (232436088).

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

129795912 is a wasteful number, since it uses less digits than its factorization.

129795912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2827 (or 2817 counting only the distinct ones).

The product of its digits is 102060, while the sum is 45.

The square root of 129795912 is about 11392.8008847693. The cubic root of 129795912 is about 506.3144686074.

The spelling of 129795912 in words is "one hundred twenty-nine million, seven hundred ninety-five thousand, nine hundred twelve".