20129295 has 16 divisors (see below), whose sum is σ = 33078240. Its totient is φ = 10445184.

The previous prime is 20129287. The next prime is 20129311. The reversal of 20129295 is 59292102.

It is not a de Polignac number, because 20129295 - 2³ = 20129287 is a prime.

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, 17580 + ... + 18689.

It is an arithmetic number, because the mean of its divisors is an integer number (2067390).

Almost surely, 2^20129295 is an apocalyptic number.

20129295 is a deficient number, since it is larger than the sum of its proper divisors (12948945).

20129295 is a wasteful number, since it uses less digits than its factorization.

20129295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36314.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 20129295 is about 4486.5682876782. The cubic root of 20129295 is about 272.0254400585.

The spelling of 20129295 in words is "twenty million, one hundred twenty-nine thousand, two hundred ninety-five".