20717050 has 24 divisors (see below), whose sum is σ = 40802076. Its totient is φ = 7799040.

The previous prime is 20717041. The next prime is 20717057. The reversal of 20717050 is 5071702.

It can be written as a sum of positive squares in 6 ways, for example, as 8543929 + 12173121 = 2923^2 + 3489^2 .

It is not an unprimeable number, because it can be changed into a prime (20717057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11337 + ... + 13036.

Almost surely, 2^20717050 is an apocalyptic number.

20717050 is a deficient number, since it is larger than the sum of its proper divisors (20085026).

20717050 is a wasteful number, since it uses less digits than its factorization.

20717050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24402 (or 24397 counting only the distinct ones).

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 20717050 is about 4551.5986202652. The cubic root of 20717050 is about 274.6477031424.

Adding to 20717050 its reverse (5071702), we get a palindrome (25788752).

The spelling of 20717050 in words is "twenty million, seven hundred seventeen thousand, fifty".