205814450 has 24 divisors (see below), whose sum is σ = 396018180. Its totient is φ = 79486400.

The previous prime is 205814449. The next prime is 205814459. The reversal of 205814450 is 54418502.

It can be written as a sum of positive squares in 6 ways, for example, as 117961321 + 87853129 = 10861^2 + 9373^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (205814459) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 69521 + ... + 72420.

Almost surely, 2^205814450 is an apocalyptic number.

205814450 is a deficient number, since it is larger than the sum of its proper divisors (190203730).

205814450 is a wasteful number, since it uses less digits than its factorization.

205814450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141982 (or 141977 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 205814450 is about 14346.2346976480. The cubic root of 205814450 is about 590.4166835307.

The spelling of 205814450 in words is "two hundred five million, eight hundred fourteen thousand, four hundred fifty".