20592216 has 48 divisors (see below), whose sum is σ = 56286360. Its totient is φ = 6800640.

The previous prime is 20592191. The next prime is 20592223. The reversal of 20592216 is 61229502.

It is a self number, because there is not a number n which added to its sum of digits gives 20592216.

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, 6871 + ... + 9401.

Almost surely, 2^20592216 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 20592216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28143180).

20592216 is an abundant number, since it is smaller than the sum of its proper divisors (35694144).

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

20592216 is a wasteful number, since it uses less digits than its factorization.

20592216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2656 (or 2649 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 20592216 is about 4537.8646960878. The cubic root of 20592216 is about 274.0949464053.

The spelling of 20592216 in words is "twenty million, five hundred ninety-two thousand, two hundred sixteen".