20323272 has 32 divisors (see below), whose sum is σ = 50940000. Its totient is φ = 6756864.

The previous prime is 20323271. The next prime is 20323291. The reversal of 20323272 is 27232302.

It is not an unprimeable number, because it can be changed into a prime (20323271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11128 + ... + 12824.

It is an arithmetic number, because the mean of its divisors is an integer number (1591875).

Almost surely, 2^20323272 is an apocalyptic number.

It is an amenable number.

20323272 is an abundant number, since it is smaller than the sum of its proper divisors (30616728).

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

20323272 is a wasteful number, since it uses less digits than its factorization.

20323272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205 (or 2201 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 20323272 is about 4508.1339820374. The cubic root of 20323272 is about 272.8964439716.

Adding to 20323272 its reverse (27232302), we get a palindrome (47555574).

The spelling of 20323272 in words is "twenty million, three hundred twenty-three thousand, two hundred seventy-two".