20201272 has 32 divisors (see below), whose sum is σ = 46620000. Its totient is φ = 7991424.

The previous prime is 20201267. The next prime is 20201273. The reversal of 20201272 is 27210202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201273) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13147 + ... + 14602.

It is an arithmetic number, because the mean of its divisors is an integer number (1456875).

Almost surely, 2^20201272 is an apocalyptic number.

It is an amenable number.

20201272 is an abundant number, since it is smaller than the sum of its proper divisors (26418728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20201272 is a wasteful number, since it uses less digits than its factorization.

20201272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27775 (or 27771 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 20201272 is about 4494.5825167639. The cubic root of 20201272 is about 272.3492845554.

Adding to 20201272 its reverse (27210202), we get a palindrome (47411474).

The spelling of 20201272 in words is "twenty million, two hundred one thousand, two hundred seventy-two".