129288795 has 16 divisors (see below), whose sum is σ = 207463200. Its totient is φ = 68753664.

The previous prime is 129288769. The next prime is 129288821. The reversal of 129288795 is 597882921.

It is an interprime number because it is at equal distance from previous prime (129288769) and next prime (129288821).

It is not a de Polignac number, because 129288795 - 2¹³ = 129280603 is a prime.

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, 7114 + ... + 17583.

It is an arithmetic number, because the mean of its divisors is an integer number (12966450).

Almost surely, 2^129288795 is an apocalyptic number.

129288795 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

129288795 is a deficient number, since it is larger than the sum of its proper divisors (78174405).

129288795 is a wasteful number, since it uses less digits than its factorization.

129288795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25054.

The product of its digits is 725760, while the sum is 51.

The square root of 129288795 is about 11370.5230750392. The cubic root of 129288795 is about 505.6542120837.

The spelling of 129288795 in words is "one hundred twenty-nine million, two hundred eighty-eight thousand, seven hundred ninety-five".