129396288 has 112 divisors (see below), whose sum is σ = 400547840. Its totient is φ = 36094464.

The previous prime is 129396269. The next prime is 129396301. The reversal of 129396288 is 882693921.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (48).

Its product of digits (373248) is a multiple of the sum of its prime factors (2304).

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, 56673 + ... + 58911.

It is an arithmetic number, because the mean of its divisors is an integer number (3576320).

Almost surely, 2^129396288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129396288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200273920).

129396288 is an abundant number, since it is smaller than the sum of its proper divisors (271151552).

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

129396288 is a wasteful number, since it uses less digits than its factorization.

129396288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304 (or 2294 counting only the distinct ones).

The product of its digits is 373248, while the sum is 48.

The square root of 129396288 is about 11375.2489203533. The cubic root of 129396288 is about 505.7943098946.

The spelling of 129396288 in words is "one hundred twenty-nine million, three hundred ninety-six thousand, two hundred eighty-eight".