205962740 has 12 divisors (see below), whose sum is σ = 432521796. Its totient is φ = 82385088.

The previous prime is 205962739. The next prime is 205962751. The reversal of 205962740 is 47269502.

It can be written as a sum of positive squares in 2 ways, for example, as 84566416 + 121396324 = 9196^2 + 11018^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 205962740.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5149049 + ... + 5149088.

It is an arithmetic number, because the mean of its divisors is an integer number (36043483).

Almost surely, 2^205962740 is an apocalyptic number.

205962740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205962740 is an abundant number, since it is smaller than the sum of its proper divisors (226559056).

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

205962740 is a wasteful number, since it uses less digits than its factorization.

205962740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10298146 (or 10298144 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 205962740 is about 14351.4020221022. The cubic root of 205962740 is about 590.5584485542.

The spelling of 205962740 in words is "two hundred five million, nine hundred sixty-two thousand, seven hundred forty".