20716846 has 16 divisors (see below), whose sum is σ = 34039440. Its totient is φ = 9412480.

The previous prime is 20716789. The next prime is 20716873. The reversal of 20716846 is 64861702.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9520 + ... + 11491.

It is an arithmetic number, because the mean of its divisors is an integer number (2127465).

Almost surely, 2^20716846 is an apocalyptic number.

20716846 is a deficient number, since it is larger than the sum of its proper divisors (13322594).

20716846 is a wasteful number, since it uses less digits than its factorization.

20716846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21059.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 20716846 is about 4551.5762105011. The cubic root of 20716846 is about 274.6468016576.

The spelling of 20716846 in words is "twenty million, seven hundred sixteen thousand, eight hundred forty-six".