20310272 has 18 divisors (see below), whose sum is σ = 40541718. Its totient is φ = 10155008.

The previous prime is 20310271. The next prime is 20310287. The reversal of 20310272 is 27201302.

It can be written as a sum of positive squares in only one way, i.e., 13424896 + 6885376 = 3664^2 + 2624^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20310272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39413 + ... + 39924.

Almost surely, 2^20310272 is an apocalyptic number.

It is an amenable number.

20310272 is a deficient number, since it is larger than the sum of its proper divisors (20231446).

20310272 is an frugal number, since it uses more digits than its factorization.

20310272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79353 (or 79339 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 20310272 is about 4506.6919131443. The cubic root of 20310272 is about 272.8382445099.

Adding to 20310272 its reverse (27201302), we get a palindrome (47511574).

The spelling of 20310272 in words is "twenty million, three hundred ten thousand, two hundred seventy-two".