20180272 has 20 divisors (see below), whose sum is σ = 44685136. Its totient is φ = 8648640.

The previous prime is 20180263. The next prime is 20180291. The reversal of 20180272 is 27208102.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 89979 + ... + 90202.

Almost surely, 2^20180272 is an apocalyptic number.

It is an amenable number.

20180272 is an abundant number, since it is smaller than the sum of its proper divisors (24504864).

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

20180272 is a wasteful number, since it uses less digits than its factorization.

20180272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180196 (or 180190 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 20180272 is about 4492.2457635352. The cubic root of 20180272 is about 272.2548793129.

Adding to 20180272 its reverse (27208102), we get a palindrome (47388374).

The spelling of 20180272 in words is "twenty million, one hundred eighty thousand, two hundred seventy-two".