20129814 has 24 divisors (see below), whose sum is σ = 43706520. Its totient is φ = 6695808.

The previous prime is 20129789. The next prime is 20129833. The reversal of 20129814 is 41892102.

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 11 ways as a sum of consecutive naturals, for example, 11014 + ... + 12710.

It is an arithmetic number, because the mean of its divisors is an integer number (1821105).

Almost surely, 2^20129814 is an apocalyptic number.

20129814 is an abundant number, since it is smaller than the sum of its proper divisors (23576706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20129814 is a wasteful number, since it uses less digits than its factorization.

20129814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364 (or 2361 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 20129814 is about 4486.6261266123. The cubic root of 20129814 is about 272.0277779445.

The spelling of 20129814 in words is "twenty million, one hundred twenty-nine thousand, eight hundred fourteen".