20007272 has 32 divisors (see below), whose sum is σ = 38474400. Its totient is φ = 9751104.

The previous prime is 20007259. The next prime is 20007287. The reversal of 20007272 is 27270002.

20007272 is a modest number, since divided by 7272 gives 2000 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87254 + ... + 87482.

It is an arithmetic number, because the mean of its divisors is an integer number (1202325).

Almost surely, 2^20007272 is an apocalyptic number.

It is an amenable number.

20007272 is a deficient number, since it is larger than the sum of its proper divisors (18467128).

20007272 is a wasteful number, since it uses less digits than its factorization.

20007272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 20007272 is about 4472.9489154248. The cubic root of 20007272 is about 271.4746564145.

Adding to 20007272 its reverse (27270002), we get a palindrome (47277274).

The spelling of 20007272 in words is "twenty million, seven thousand, two hundred seventy-two".