20040272 has 20 divisors (see below), whose sum is σ = 44375136. Its totient is φ = 8588640.

The previous prime is 20040259. The next prime is 20040289. The reversal of 20040272 is 27204002.

It is a super-2 number, since 2×20040272² = 803225003667968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20040272.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89354 + ... + 89577.

Almost surely, 2^20040272 is an apocalyptic number.

It is an amenable number.

20040272 is an abundant number, since it is smaller than the sum of its proper divisors (24334864).

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

20040272 is a wasteful number, since it uses less digits than its factorization.

20040272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178946 (or 178940 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 20040272 is about 4476.6362371763. The cubic root of 20040272 is about 271.6238312195.

Adding to 20040272 its reverse (27204002), we get a palindrome (47244274).

The spelling of 20040272 in words is "twenty million, forty thousand, two hundred seventy-two".