20716950 has 24 divisors (see below), whose sum is σ = 51378408. Its totient is φ = 5524480.

The previous prime is 20716921. The next prime is 20716961. The reversal of 20716950 is 5961702.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 68907 + ... + 69206.

It is an arithmetic number, because the mean of its divisors is an integer number (2140767).

Almost surely, 2^20716950 is an apocalyptic number.

20716950 is an abundant number, since it is smaller than the sum of its proper divisors (30661458).

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

20716950 is a wasteful number, since it uses less digits than its factorization.

20716950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138128 (or 138123 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 20716950 is about 4551.5876351005. The cubic root of 20716950 is about 274.6472612389.

The spelling of 20716950 in words is "twenty million, seven hundred sixteen thousand, nine hundred fifty".