205062740 has 24 divisors (see below), whose sum is σ = 433528200. Its totient is φ = 81473408.

The previous prime is 205062727. The next prime is 205062787. The reversal of 205062740 is 47260502.

It can be written as a sum of positive squares in 4 ways, for example, as 38291344 + 166771396 = 6188^2 + 12914^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31427 + ... + 37386.

It is an arithmetic number, because the mean of its divisors is an integer number (18063675).

Almost surely, 2^205062740 is an apocalyptic number.

205062740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205062740 is an abundant number, since it is smaller than the sum of its proper divisors (228465460).

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

205062740 is a wasteful number, since it uses less digits than its factorization.

205062740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68971 (or 68969 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 205062740 is about 14320.0118715035. The cubic root of 205062740 is about 589.6970004082.

The spelling of 205062740 in words is "two hundred five million, sixty-two thousand, seven hundred forty".