204028291 has 2 divisors, whose sum is σ = 204028292. Its totient is φ = 204028290.

The previous prime is 204028277. The next prime is 204028367. The reversal of 204028291 is 192820402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204028291 is a prime.

It is a plaindrome in base 13.

It is not a weakly prime, because it can be changed into another prime (204028261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102014145 + 102014146.

It is an arithmetic number, because the mean of its divisors is an integer number (102014146).

Almost surely, 2^204028291 is an apocalyptic number.

204028291 is a deficient number, since it is larger than the sum of its proper divisors (1).

204028291 is an equidigital number, since it uses as much as digits as its factorization.

204028291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 204028291 is about 14283.8472058476. The cubic root of 204028291 is about 588.7037432536.

Adding to 204028291 its reverse (192820402), we get a palindrome (396848693).

The spelling of 204028291 in words is "two hundred four million, twenty-eight thousand, two hundred ninety-one".