20706716 has 24 divisors (see below), whose sum is σ = 38060064. Its totient is φ = 9838400.

The previous prime is 20706709. The next prime is 20706767. The reversal of 20706716 is 61760702.

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, 15266 + ... + 16566.

It is an arithmetic number, because the mean of its divisors is an integer number (1585836).

Almost surely, 2^20706716 is an apocalyptic number.

It is an amenable number.

20706716 is a deficient number, since it is larger than the sum of its proper divisors (17353348).

20706716 is a wasteful number, since it uses less digits than its factorization.

20706716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501 (or 1499 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 20706716 is about 4550.4632731185. The cubic root of 20706716 is about 274.6020293068.

The spelling of 20706716 in words is "twenty million, seven hundred six thousand, seven hundred sixteen".