205404422 has 4 divisors (see below), whose sum is σ = 308106636. Its totient is φ = 102702210.

The previous prime is 205404413. The next prime is 205404431. The reversal of 205404422 is 224404502.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (205404413) and next prime (205404431).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51351104 + ... + 51351107.

It is an arithmetic number, because the mean of its divisors is an integer number (77026659).

Almost surely, 2^205404422 is an apocalyptic number.

205404422 is a deficient number, since it is larger than the sum of its proper divisors (102702214).

205404422 is a wasteful number, since it uses less digits than its factorization.

205404422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102702213.

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 205404422 is about 14331.9371335490. The cubic root of 205404422 is about 590.0243425751.

Adding to 205404422 its reverse (224404502), we get a palindrome (429808924).

The spelling of 205404422 in words is "two hundred five million, four hundred four thousand, four hundred twenty-two".