129798 has 12 divisors (see below), whose sum is σ = 281268. Its totient is φ = 43260.

The previous prime is 129793. The next prime is 129803. The reversal of 129798 is 897921.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (129793) and next prime (129803).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129793) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3588 + ... + 3623.

It is an arithmetic number, because the mean of its divisors is an integer number (23439).

2¹²⁹⁷⁹⁸ is an apocalyptic number.

129798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

129798 is an abundant number, since it is smaller than the sum of its proper divisors (151470).

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

129798 is a wasteful number, since it uses less digits than its factorization.

129798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7219 (or 7216 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 129798 is about 360.2748950454. The cubic root of 129798 is about 50.6317183585.

The spelling of 129798 in words is "one hundred twenty-nine thousand, seven hundred ninety-eight".