20200261 has 8 divisors (see below), whose sum is σ = 21139704. Its totient is φ = 19281600.

The previous prime is 20200259. The next prime is 20200289. The reversal of 20200261 is 16200202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14822500 + 5377761 = 3850^2 + 2319^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20200261 - 2¹ = 20200259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20240261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3190 + ... + 7111.

It is an arithmetic number, because the mean of its divisors is an integer number (2642463).

Almost surely, 2^20200261 is an apocalyptic number.

It is an amenable number.

20200261 is a deficient number, since it is larger than the sum of its proper divisors (939443).

20200261 is a wasteful number, since it uses less digits than its factorization.

20200261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10391.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20200261 is about 4494.4700466240. The cubic root of 20200261 is about 272.3447411167.

Adding to 20200261 its reverse (16200202), we get a palindrome (36400463).

The spelling of 20200261 in words is "twenty million, two hundred thousand, two hundred sixty-one".