20707716 has 24 divisors (see below), whose sum is σ = 49624960. Its totient is φ = 6715872.

The previous prime is 20707699. The next prime is 20707723. The reversal of 20707716 is 61770702.

It is a happy 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, 22876 + ... + 23763.

Almost surely, 2^20707716 is an apocalyptic number.

It is an amenable number.

20707716 is an abundant number, since it is smaller than the sum of its proper divisors (28917244).

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

20707716 is a wasteful number, since it uses less digits than its factorization.

20707716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46683 (or 46681 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 30.

The square root of 20707716 is about 4550.5731507141. The cubic root of 20707716 is about 274.6064497343.

The spelling of 20707716 in words is "twenty million, seven hundred seven thousand, seven hundred sixteen".