205444630 has 16 divisors (see below), whose sum is σ = 374867424. Its totient is φ = 81051840.

The previous prime is 205444621. The next prime is 205444633. The reversal of 205444630 is 36444502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205444633) 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, 139986 + ... + 141445.

It is an arithmetic number, because the mean of its divisors is an integer number (23429214).

Almost surely, 2^205444630 is an apocalyptic number.

205444630 is a deficient number, since it is larger than the sum of its proper divisors (169422794).

205444630 is a wasteful number, since it uses less digits than its factorization.

205444630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281511.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 205444630 is about 14333.3398062001. The cubic root of 205444630 is about 590.0628392324.

The spelling of 205444630 in words is "two hundred five million, four hundred forty-four thousand, six hundred thirty".