205412530 has 64 divisors (see below), whose sum is σ = 407034720. Its totient is φ = 74575872.

The previous prime is 205412507. The next prime is 205412551. The reversal of 205412530 is 35214502.

205412530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 16 ways, for example, as 15000129 + 190412401 = 3873^2 + 13799^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1817754 + ... + 1817866.

Almost surely, 2^205412530 is an apocalyptic number.

205412530 is a deficient number, since it is larger than the sum of its proper divisors (201622190).

205412530 is a wasteful number, since it uses less digits than its factorization.

205412530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 205412530 is about 14332.2199955206. The cubic root of 205412530 is about 590.0321058848.

The spelling of 205412530 in words is "two hundred five million, four hundred twelve thousand, five hundred thirty".