129579028 has 6 divisors (see below), whose sum is σ = 226763306. Its totient is φ = 64789512.

The previous prime is 129579013. The next prime is 129579029. The reversal of 129579028 is 820975921.

It can be written as a sum of positive squares in only one way, i.e., 97180164 + 32398864 = 9858^2 + 5692^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129579029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16197375 + ... + 16197382.

Almost surely, 2^129579028 is an apocalyptic number.

It is an amenable number.

129579028 is a deficient number, since it is larger than the sum of its proper divisors (97184278).

129579028 is a wasteful number, since it uses less digits than its factorization.

129579028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32394761 (or 32394759 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 129579028 is about 11383.2784381302. The cubic root of 129579028 is about 506.0323006871.

The spelling of 129579028 in words is "one hundred twenty-nine million, five hundred seventy-nine thousand, twenty-eight".