200268821 has 8 divisors (see below), whose sum is σ = 205093944. Its totient is φ = 195482560.

The previous prime is 200268811. The next prime is 200268841. The reversal of 200268821 is 128862002.

It can be written as a sum of positive squares in 4 ways, for example, as 135466321 + 64802500 = 11639^2 + 8050^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200268821 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 (200268811) 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, 851 + ... + 20031.

It is an arithmetic number, because the mean of its divisors is an integer number (25636743).

Almost surely, 2^200268821 is an apocalyptic number.

It is an amenable number.

200268821 is a deficient number, since it is larger than the sum of its proper divisors (4825123).

200268821 is a wasteful number, since it uses less digits than its factorization.

200268821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19431.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 200268821 is about 14151.6366897967. The cubic root of 200268821 is about 585.0654427969.

The spelling of 200268821 in words is "two hundred million, two hundred sixty-eight thousand, eight hundred twenty-one".