129806038 has 8 divisors (see below), whose sum is σ = 196432488. Its totient is φ = 64328544.

The previous prime is 129806011. The next prime is 129806051. The reversal of 129806038 is 830608921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 129805988 and 129806006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286956 + ... + 287407.

It is an arithmetic number, because the mean of its divisors is an integer number (24554061).

Almost surely, 2^129806038 is an apocalyptic number.

129806038 is a deficient number, since it is larger than the sum of its proper divisors (66626450).

129806038 is a wasteful number, since it uses less digits than its factorization.

129806038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574478.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 129806038 is about 11393.2452795505. The cubic root of 129806038 is about 506.3276349363.

The spelling of 129806038 in words is "one hundred twenty-nine million, eight hundred six thousand, thirty-eight".