129198564 has 60 divisors (see below), whose sum is σ = 368465328. Its totient is φ = 39150000.

The previous prime is 129198557. The next prime is 129198569. The reversal of 129198564 is 465891921.

It is not an unprimeable number, because it can be changed into a prime (129198569) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14562 + ... + 21689.

Almost surely, 2^129198564 is an apocalyptic number.

It is an amenable number.

129198564 is an abundant number, since it is smaller than the sum of its proper divisors (239266764).

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

129198564 is a wasteful number, since it uses less digits than its factorization.

129198564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36278 (or 36267 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 129198564 is about 11366.5546231037. The cubic root of 129198564 is about 505.5365522266.

The spelling of 129198564 in words is "one hundred twenty-nine million, one hundred ninety-eight thousand, five hundred sixty-four".