20771260 has 12 divisors (see below), whose sum is σ = 43619688. Its totient is φ = 8308496.

The previous prime is 20771213. The next prime is 20771269. The reversal of 20771260 is 6217702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20771269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519262 + ... + 519301.

It is an arithmetic number, because the mean of its divisors is an integer number (3634974).

Almost surely, 2^20771260 is an apocalyptic number.

20771260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20771260 is an abundant number, since it is smaller than the sum of its proper divisors (22848428).

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

20771260 is a wasteful number, since it uses less digits than its factorization.

20771260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038572 (or 1038570 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 20771260 is about 4557.5497803096. The cubic root of 20771260 is about 274.8870500335.

Adding to 20771260 its reverse (6217702), we get a palindrome (26988962).

The spelling of 20771260 in words is "twenty million, seven hundred seventy-one thousand, two hundred sixty".