20272764 has 12 divisors (see below), whose sum is σ = 47303144. Its totient is φ = 6757584.

The previous prime is 20272751. The next prime is 20272771. The reversal of 20272764 is 46727202.

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 844687 + ... + 844710.

Almost surely, 2^20272764 is an apocalyptic number.

It is an amenable number.

20272764 is an abundant number, since it is smaller than the sum of its proper divisors (27030380).

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

20272764 is a wasteful number, since it uses less digits than its factorization.

20272764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689404 (or 1689402 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 20272764 is about 4502.5286228962. The cubic root of 20272764 is about 272.6701863143.

Adding to 20272764 its reverse (46727202), we get a palindrome (66999966).

The spelling of 20272764 in words is "twenty million, two hundred seventy-two thousand, seven hundred sixty-four".