20716230 has 16 divisors (see below), whose sum is σ = 49719024. Its totient is φ = 5524320.

The previous prime is 20716229. The next prime is 20716243. The reversal of 20716230 is 3261702.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20716197 and 20716206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345241 + ... + 345300.

It is an arithmetic number, because the mean of its divisors is an integer number (3107439).

Almost surely, 2^20716230 is an apocalyptic number.

20716230 is an abundant number, since it is smaller than the sum of its proper divisors (29002794).

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

20716230 is a wasteful number, since it uses less digits than its factorization.

20716230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690551.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 20716230 is about 4551.5085411323. The cubic root of 20716230 is about 274.6440794912.

Adding to 20716230 its reverse (3261702), we get a palindrome (23977932).

The spelling of 20716230 in words is "twenty million, seven hundred sixteen thousand, two hundred thirty".