205120733 has 4 divisors (see below), whose sum is σ = 205549440. Its totient is φ = 204692028.

The previous prime is 205120709. The next prime is 205120763. The reversal of 205120733 is 337021502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 205120733 - 2¹⁰ = 205119709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205120699 and 205120708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205120763) 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, 213635 + ... + 214592.

It is an arithmetic number, because the mean of its divisors is an integer number (51387360).

Almost surely, 2^205120733 is an apocalyptic number.

It is an amenable number.

205120733 is a deficient number, since it is larger than the sum of its proper divisors (428707).

205120733 is an equidigital number, since it uses as much as digits as its factorization.

205120733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428706.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 205120733 is about 14322.0366219333. The cubic root of 205120733 is about 589.7525851443.

The spelling of 205120733 in words is "two hundred five million, one hundred twenty thousand, seven hundred thirty-three".