20102272 has 16 divisors (see below), whose sum is σ = 40047750. Its totient is φ = 10051072.

The previous prime is 20102267. The next prime is 20102273. The reversal of 20102272 is 27220102.

It can be written as a sum of positive squares in only one way, i.e., 11669056 + 8433216 = 3416^2 + 2904^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (20102273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78397 + ... + 78652.

Almost surely, 2^20102272 is an apocalyptic number.

It is an amenable number.

20102272 is a deficient number, since it is larger than the sum of its proper divisors (19945478).

20102272 is an equidigital number, since it uses as much as digits as its factorization.

20102272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157063 (or 157051 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 20102272 is about 4483.5557317825. Note that the first 3 decimals coincide. The cubic root of 20102272 is about 271.9036567671.

Adding to 20102272 its reverse (27220102), we get a palindrome (47322374).

The spelling of 20102272 in words is "twenty million, one hundred two thousand, two hundred seventy-two".