129796190 has 32 divisors (see below), whose sum is σ = 250788960. Its totient is φ = 48190464.

The previous prime is 129796189. The next prime is 129796229. The reversal of 129796190 is 91697921.

It is a super-2 number, since 2×129796190² = 33694101877032200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 15 ways as a sum of consecutive naturals, for example, 7181 + ... + 17639.

It is an arithmetic number, because the mean of its divisors is an integer number (7837155).

Almost surely, 2^129796190 is an apocalyptic number.

129796190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129796190 is a deficient number, since it is larger than the sum of its proper divisors (120992770).

129796190 is a wasteful number, since it uses less digits than its factorization.

129796190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10556.

The product of its (nonzero) digits is 61236, while the sum is 44.

The square root of 129796190 is about 11392.8130854500. The cubic root of 129796190 is about 506.3148300860.

The spelling of 129796190 in words is "one hundred twenty-nine million, seven hundred ninety-six thousand, one hundred ninety".