202028291 has 2 divisors, whose sum is σ = 202028292. Its totient is φ = 202028290.

The previous prime is 202028269. The next prime is 202028329. The reversal of 202028291 is 192820202.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202028291 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202028291.

It is not a weakly prime, because it can be changed into another prime (202028261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101014145 + 101014146.

It is an arithmetic number, because the mean of its divisors is an integer number (101014146).

Almost surely, 2^202028291 is an apocalyptic number.

202028291 is a deficient number, since it is larger than the sum of its proper divisors (1).

202028291 is an equidigital number, since it uses as much as digits as its factorization.

202028291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 202028291 is about 14213.6656426131. The cubic root of 202028291 is about 586.7738217162.

Adding to 202028291 its reverse (192820202), we get a palindrome (394848493).

The spelling of 202028291 in words is "two hundred two million, twenty-eight thousand, two hundred ninety-one".