20272772 has 72 divisors (see below), whose sum is σ = 43323840. Its totient is φ = 8225280.

The previous prime is 20272771. The next prime is 20272783. The reversal of 20272772 is 27727202.

It is not an unprimeable number, because it can be changed into a prime (20272771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 285497 + ... + 285567.

It is an arithmetic number, because the mean of its divisors is an integer number (601720).

Almost surely, 2^20272772 is an apocalyptic number.

It is an amenable number.

20272772 is an abundant number, since it is smaller than the sum of its proper divisors (23051068).

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

20272772 is a wasteful number, since it uses less digits than its factorization.

20272772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 29.

The square root of 20272772 is about 4502.5295112859. The cubic root of 20272772 is about 272.6702221812.

Adding to 20272772 its reverse (27727202), we get a palindrome (47999974).

The spelling of 20272772 in words is "twenty million, two hundred seventy-two thousand, seven hundred seventy-two".