129228564 has 12 divisors (see below), whose sum is σ = 301533344. Its totient is φ = 43076184.

The previous prime is 129228527. The next prime is 129228571. The reversal of 129228564 is 465822921.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 5384512 + ... + 5384535.

Almost surely, 2^129228564 is an apocalyptic number.

It is an amenable number.

129228564 is an abundant number, since it is smaller than the sum of its proper divisors (172304780).

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

129228564 is a wasteful number, since it uses less digits than its factorization.

129228564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10769054 (or 10769052 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 129228564 is about 11367.8742076080. The cubic root of 129228564 is about 505.5756778494.

The spelling of 129228564 in words is "one hundred twenty-nine million, two hundred twenty-eight thousand, five hundred sixty-four".