20650994 has 16 divisors (see below), whose sum is σ = 38125248. Its totient is φ = 8169552.

The previous prime is 20650979. The next prime is 20650997. The reversal of 20650994 is 49905602.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20650997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56552 + ... + 56915.

It is an arithmetic number, because the mean of its divisors is an integer number (2382828).

Almost surely, 2^20650994 is an apocalyptic number.

20650994 is a deficient number, since it is larger than the sum of its proper divisors (17474254).

20650994 is a wasteful number, since it uses less digits than its factorization.

20650994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113489.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 20650994 is about 4544.3364752184. The cubic root of 20650994 is about 274.3554890020.

The spelling of 20650994 in words is "twenty million, six hundred fifty thousand, nine hundred ninety-four".