205323740 has 48 divisors (see below), whose sum is σ = 439447680. Its totient is φ = 80569920.

The previous prime is 205323733. The next prime is 205323751. The reversal of 205323740 is 47323502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 296795 + ... + 297485.

It is an arithmetic number, because the mean of its divisors is an integer number (9155160).

Almost surely, 2^205323740 is an apocalyptic number.

205323740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205323740 is an abundant number, since it is smaller than the sum of its proper divisors (234123940).

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

205323740 is a wasteful number, since it uses less digits than its factorization.

205323740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962 (or 960 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 26.

The square root of 205323740 is about 14329.1220945318. The cubic root of 205323740 is about 589.9470794246.

The spelling of 205323740 in words is "two hundred five million, three hundred twenty-three thousand, seven hundred forty".