129288344 has 8 divisors (see below), whose sum is σ = 242415660. Its totient is φ = 64644168.

The previous prime is 129288337. The next prime is 129288347. The reversal of 129288344 is 443882921.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129288347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8080514 + ... + 8080529.

Almost surely, 2^129288344 is an apocalyptic number.

It is an amenable number.

129288344 is a deficient number, since it is larger than the sum of its proper divisors (113127316).

129288344 is a wasteful number, since it uses less digits than its factorization.

129288344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16161049 (or 16161045 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 129288344 is about 11370.5032430407. The cubic root of 129288344 is about 505.6536241227.

The spelling of 129288344 in words is "one hundred twenty-nine million, two hundred eighty-eight thousand, three hundred forty-four".