205494320 has 40 divisors (see below), whose sum is σ = 478536336. Its totient is φ = 82066688.

The previous prime is 205494313. The next prime is 205494347. The reversal of 205494320 is 23494502.

It is a tau number, because it is divible by the number of its divisors (40).

It is a zygodrome in base 2.

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 in 7 ways as a sum of consecutive naturals, for example, 60179 + ... + 63501.

Almost surely, 2^205494320 is an apocalyptic number.

205494320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205494320 is an abundant number, since it is smaller than the sum of its proper divisors (273042016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205494320 is a wasteful number, since it uses less digits than its factorization.

205494320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4109 (or 4103 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 205494320 is about 14335.0730727123. The cubic root of 205494320 is about 590.1104073760.

The spelling of 205494320 in words is "two hundred five million, four hundred ninety-four thousand, three hundred twenty".