129788352 has 56 divisors (see below), whose sum is σ = 381558800. Its totient is φ = 43262208.

The previous prime is 129788327. The next prime is 129788363. The reversal of 129788352 is 253887921.

It is a happy number.

129788352 is a `hidden beast` number, since 1 + 297 + 8 + 8 + 352 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 129788298 and 129788307.

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, 35827 + ... + 39282.

It is an arithmetic number, because the mean of its divisors is an integer number (6813550).

Almost surely, 2^129788352 is an apocalyptic number.

129788352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129788352 is an abundant number, since it is smaller than the sum of its proper divisors (251770448).

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

129788352 is an equidigital number, since it uses as much as digits as its factorization.

129788352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75130 (or 75114 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 129788352 is about 11392.4690914656. The cubic root of 129788352 is about 506.3046382729.

The spelling of 129788352 in words is "one hundred twenty-nine million, seven hundred eighty-eight thousand, three hundred fifty-two".