20716260 has 24 divisors (see below), whose sum is σ = 58005696. Its totient is φ = 5524320.

The previous prime is 20716253. The next prime is 20716273. The reversal of 20716260 is 6261702.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20716260.

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, 172576 + ... + 172695.

It is an arithmetic number, because the mean of its divisors is an integer number (2416904).

Almost surely, 2^20716260 is an apocalyptic number.

20716260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20716260 is an abundant number, since it is smaller than the sum of its proper divisors (37289436).

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

20716260 is a wasteful number, since it uses less digits than its factorization.

20716260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345283 (or 345281 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 20716260 is about 4551.5118367417. The cubic root of 20716260 is about 274.6442120655.

Adding to 20716260 its reverse (6261702), we get a palindrome (26977962).

The spelling of 20716260 in words is "twenty million, seven hundred sixteen thousand, two hundred sixty".