20051272 has 8 divisors (see below), whose sum is σ = 37596150. Its totient is φ = 10025632.

The previous prime is 20051263. The next prime is 20051293. The reversal of 20051272 is 27215002.

It can be written as a sum of positive squares in only one way, i.e., 20016676 + 34596 = 4474^2 + 186^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1253197 + ... + 1253212.

Almost surely, 2^20051272 is an apocalyptic number.

It is an amenable number.

20051272 is a deficient number, since it is larger than the sum of its proper divisors (17544878).

20051272 is a wasteful number, since it uses less digits than its factorization.

20051272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506415 (or 2506411 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 20051272 is about 4477.8646696835. The cubic root of 20051272 is about 271.6735197605.

Adding to 20051272 its reverse (27215002), we get a palindrome (47266274).

The spelling of 20051272 in words is "twenty million, fifty-one thousand, two hundred seventy-two".