129864326 has 16 divisors (see below), whose sum is σ = 206931024. Its totient is φ = 60912384.

The previous prime is 129864313. The next prime is 129864331. The reversal of 129864326 is 623468921.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4541 + ... + 16743.

It is an arithmetic number, because the mean of its divisors is an integer number (12933189).

Almost surely, 2^129864326 is an apocalyptic number.

129864326 is a deficient number, since it is larger than the sum of its proper divisors (77066698).

129864326 is a wasteful number, since it uses less digits than its factorization.

129864326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12535.

The product of its digits is 124416, while the sum is 41.

The square root of 129864326 is about 11395.8029993502. The cubic root of 129864326 is about 506.4034105814.

The spelling of 129864326 in words is "one hundred twenty-nine million, eight hundred sixty-four thousand, three hundred twenty-six".