20301172 has 12 divisors (see below), whose sum is σ = 36027936. Its totient is φ = 10007480.

The previous prime is 20301137. The next prime is 20301181. The reversal of 20301172 is 27110302.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35458 + ... + 36025.

It is an arithmetic number, because the mean of its divisors is an integer number (3002328).

Almost surely, 2^20301172 is an apocalyptic number.

It is an amenable number.

20301172 is a deficient number, since it is larger than the sum of its proper divisors (15726764).

20301172 is a wasteful number, since it uses less digits than its factorization.

20301172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71558 (or 71556 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 20301172 is about 4505.6821903015. The cubic root of 20301172 is about 272.7974901086.

Adding to 20301172 its reverse (27110302), we get a palindrome (47411474).

The spelling of 20301172 in words is "twenty million, three hundred one thousand, one hundred seventy-two".