20196129 has 8 divisors (see below), whose sum is σ = 27125280. Its totient is φ = 13365536.

The previous prime is 20196109. The next prime is 20196173. The reversal of 20196129 is 92169102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20196129 - 2⁸ = 20195873 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20196096 and 20196105.

It is not an unprimeable number, because it can be changed into a prime (20196109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24159 + ... + 24980.

It is an arithmetic number, because the mean of its divisors is an integer number (3390660).

Almost surely, 2^20196129 is an apocalyptic number.

It is an amenable number.

20196129 is a deficient number, since it is larger than the sum of its proper divisors (6929151).

20196129 is a wasteful number, since it uses less digits than its factorization.

20196129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49279.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 20196129 is about 4494.0103471176. The cubic root of 20196129 is about 272.3261703136.

The spelling of 20196129 in words is "twenty million, one hundred ninety-six thousand, one hundred twenty-nine".