205072733 has 4 divisors (see below), whose sum is σ = 205276188. Its totient is φ = 204869280.

The previous prime is 205072687. The next prime is 205072783. The reversal of 205072733 is 337270502.

205072733 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 337270502 = 2 ⋅168635251.

It can be written as a sum of positive squares in 2 ways, for example, as 25030009 + 180042724 = 5003^2 + 13418^2 .

It is a cyclic number.

It is not a de Polignac number, because 205072733 - 2¹⁶ = 205007197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 205072696 and 205072705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205072783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100208 + ... + 102233.

It is an arithmetic number, because the mean of its divisors is an integer number (51319047).

Almost surely, 2^205072733 is an apocalyptic number.

It is an amenable number.

205072733 is a deficient number, since it is larger than the sum of its proper divisors (203455).

205072733 is a wasteful number, since it uses less digits than its factorization.

205072733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203454.

The product of its (nonzero) digits is 8820, while the sum is 29.

The square root of 205072733 is about 14320.3607845613. The cubic root of 205072733 is about 589.7065791781.

The spelling of 205072733 in words is "two hundred five million, seventy-two thousand, seven hundred thirty-three".