20816950 has 48 divisors (see below), whose sum is σ = 48282624. Its totient is φ = 6487200.

The previous prime is 20816923. The next prime is 20816953. The reversal of 20816950 is 5961802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20816953) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1147 + ... + 6553.

It is an arithmetic number, because the mean of its divisors is an integer number (1005888).

Almost surely, 2^20816950 is an apocalyptic number.

20816950 is an abundant number, since it is smaller than the sum of its proper divisors (27465674).

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

20816950 is a wasteful number, since it uses less digits than its factorization.

20816950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5437 (or 5432 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 20816950 is about 4562.5595886520. The cubic root of 20816950 is about 275.0884563926.

The spelling of 20816950 in words is "twenty million, eight hundred sixteen thousand, nine hundred fifty".