20712108 has 12 divisors (see below), whose sum is σ = 48328280. Its totient is φ = 6904032.

The previous prime is 20712091. The next prime is 20712113. The reversal of 20712108 is 80121702.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 862993 + ... + 863016.

Almost surely, 2^20712108 is an apocalyptic number.

It is an amenable number.

20712108 is an abundant number, since it is smaller than the sum of its proper divisors (27616172).

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

20712108 is a wasteful number, since it uses less digits than its factorization.

20712108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726016 (or 1726014 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 20712108 is about 4551.0557017026. The cubic root of 20712108 is about 274.6258625668.

The spelling of 20712108 in words is "twenty million, seven hundred twelve thousand, one hundred eight".