129133296 has 60 divisors (see below), whose sum is σ = 362216400. Its totient is φ = 42946560.

The previous prime is 129133283. The next prime is 129133297. The reversal of 129133296 is 692331921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 129133296.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129133297) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91605 + ... + 93003.

It is an arithmetic number, because the mean of its divisors is an integer number (6036940).

Almost surely, 2^129133296 is an apocalyptic number.

129133296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129133296 is an abundant number, since it is smaller than the sum of its proper divisors (233083104).

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

129133296 is a wasteful number, since it uses less digits than its factorization.

129133296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054 (or 2045 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 129133296 is about 11363.6832057216. The cubic root of 129133296 is about 505.4514095945.

The spelling of 129133296 in words is "one hundred twenty-nine million, one hundred thirty-three thousand, two hundred ninety-six".