129874698 has 64 divisors (see below), whose sum is σ = 306996480. Its totient is φ = 40607424.

The previous prime is 129874687. The next prime is 129874727. The reversal of 129874698 is 896478921.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64840 + ... + 66812.

It is an arithmetic number, because the mean of its divisors is an integer number (4796820).

Almost surely, 2^129874698 is an apocalyptic number.

129874698 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 129874698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153498240).

129874698 is an abundant number, since it is smaller than the sum of its proper divisors (177121782).

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

129874698 is a wasteful number, since it uses less digits than its factorization.

129874698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2060 (or 2054 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 129874698 is about 11396.2580700860. The cubic root of 129874698 is about 506.4168920265.

The spelling of 129874698 in words is "one hundred twenty-nine million, eight hundred seventy-four thousand, six hundred ninety-eight".