20927712 has 96 divisors (see below), whose sum is σ = 60752160. Its totient is φ = 6266880.

The previous prime is 20927707. The next prime is 20927719. The reversal of 20927712 is 21772902.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 20927712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20927719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50964 + ... + 51372.

It is an arithmetic number, because the mean of its divisors is an integer number (632835).

Almost surely, 2^20927712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20927712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30376080).

20927712 is an abundant number, since it is smaller than the sum of its proper divisors (39824448).

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

20927712 is a wasteful number, since it uses less digits than its factorization.

20927712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 20927712 is about 4574.6816282666. The cubic root of 20927712 is about 275.5754868614.

The spelling of 20927712 in words is "twenty million, nine hundred twenty-seven thousand, seven hundred twelve".