20601172 has 12 divisors (see below), whose sum is σ = 36409716. Its totient is φ = 10198400.

The previous prime is 20601167. The next prime is 20601173. The reversal of 20601172 is 27110602.

It can be written as a sum of positive squares in 2 ways, for example, as 9217296 + 11383876 = 3036^2 + 3374^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20601173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25093 + ... + 25900.

It is an arithmetic number, because the mean of its divisors is an integer number (3034143).

Almost surely, 2^20601172 is an apocalyptic number.

It is an amenable number.

20601172 is a deficient number, since it is larger than the sum of its proper divisors (15808544).

20601172 is a wasteful number, since it uses less digits than its factorization.

20601172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51098 (or 51096 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 20601172 is about 4538.8513965540. The cubic root of 20601172 is about 274.1346772522.

Adding to 20601172 its reverse (27110602), we get a palindrome (47711774).

The spelling of 20601172 in words is "twenty million, six hundred one thousand, one hundred seventy-two".