20750163 has 16 divisors (see below), whose sum is σ = 32994816. Its totient is φ = 11341440.

The previous prime is 20750161. The next prime is 20750173. The reversal of 20750163 is 36105702.

It is not a de Polignac number, because 20750163 - 2¹ = 20750161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20750161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20998 + ... + 21963.

It is an arithmetic number, because the mean of its divisors is an integer number (2062176).

Almost surely, 2^20750163 is an apocalyptic number.

20750163 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20750163 is a deficient number, since it is larger than the sum of its proper divisors (12244653).

20750163 is a wasteful number, since it uses less digits than its factorization.

20750163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42994.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 20750163 is about 4555.2346811114. The cubic root of 20750163 is about 274.7939525418.

Adding to 20750163 its reverse (36105702), we get a palindrome (56855865).

The spelling of 20750163 in words is "twenty million, seven hundred fifty thousand, one hundred sixty-three".