129898548 has 72 divisors (see below), whose sum is σ = 360353448. Its totient is φ = 39207168.

The previous prime is 129898543. The next prime is 129898567. The reversal of 129898548 is 845898921.

129898548 is a `hidden beast` number, since 1 + 2 + 9 + 8 + 98 + 548 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 30935844 + 98962704 = 5562^2 + 9948^2 .

It is a junction number, because it is equal to n+sod(n) for n = 129898494 and 129898503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129898543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22186 + ... + 27422.

It is an arithmetic number, because the mean of its divisors is an integer number (5004909).

Almost surely, 2^129898548 is an apocalyptic number.

129898548 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129898548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180176724).

129898548 is an abundant number, since it is smaller than the sum of its proper divisors (230454900).

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

129898548 is a wasteful number, since it uses less digits than its factorization.

129898548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5313 (or 5308 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 54.

The square root of 129898548 is about 11397.3044181508. The cubic root of 129898548 is about 506.4478893488.

The spelling of 129898548 in words is "one hundred twenty-nine million, eight hundred ninety-eight thousand, five hundred forty-eight".