20207272 has 32 divisors (see below), whose sum is σ = 38831400. Its totient is φ = 9856000.

The previous prime is 20207269. The next prime is 20207281. The reversal of 20207272 is 27270202.

It can be written as a sum of positive squares in 4 ways, for example, as 19589476 + 617796 = 4426^2 + 786^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71772 + ... + 72052.

Almost surely, 2^20207272 is an apocalyptic number.

20207272 is the 2248-th decagonal number.

It is an amenable number.

20207272 is a deficient number, since it is larger than the sum of its proper divisors (18624128).

20207272 is a wasteful number, since it uses less digits than its factorization.

20207272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 20207272 is about 4495.2499374340. The cubic root of 20207272 is about 272.3762454641.

Adding to 20207272 its reverse (27270202), we get a palindrome (47477474).

The spelling of 20207272 in words is "twenty million, two hundred seven thousand, two hundred seventy-two".