205735770 has 24 divisors (see below), whose sum is σ = 534913236. Its totient is φ = 54862848.

The previous prime is 205735763. The next prime is 205735787. The reversal of 205735770 is 77537502.

It can be written as a sum of positive squares in 2 ways, for example, as 199063881 + 6671889 = 14109^2 + 2583^2 .

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 11 ways as a sum of consecutive naturals, for example, 1142887 + ... + 1143066.

Almost surely, 2^205735770 is an apocalyptic number.

205735770 is an abundant number, since it is smaller than the sum of its proper divisors (329177466).

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

205735770 is a wasteful number, since it uses less digits than its factorization.

205735770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2285966 (or 2285963 counting only the distinct ones).

The product of its (nonzero) digits is 51450, while the sum is 36.

The square root of 205735770 is about 14343.4922525862. The cubic root of 205735770 is about 590.3414379143.

The spelling of 205735770 in words is "two hundred five million, seven hundred thirty-five thousand, seven hundred seventy".