20970850 has 12 divisors (see below), whose sum is σ = 39005874. Its totient is φ = 8388320.

The previous prime is 20970827. The next prime is 20970853. The reversal of 20970850 is 5807902.

It can be written as a sum of positive squares in 3 ways, for example, as 11771761 + 9199089 = 3431^2 + 3033^2 .

It is not an unprimeable number, because it can be changed into a prime (20970853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 209659 + ... + 209758.

Almost surely, 2^20970850 is an apocalyptic number.

20970850 is a deficient number, since it is larger than the sum of its proper divisors (18035024).

20970850 is a wasteful number, since it uses less digits than its factorization.

20970850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419429 (or 419424 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 20970850 is about 4579.3940647208. The cubic root of 20970850 is about 275.7647035430.

The spelling of 20970850 in words is "twenty million, nine hundred seventy thousand, eight hundred fifty".