205772115 has 8 divisors (see below), whose sum is σ = 329235408. Its totient is φ = 109745120.

The previous prime is 205772113. The next prime is 205772167. The reversal of 205772115 is 511277502.

205772115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205772115 - 2¹ = 205772113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205772113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6859056 + ... + 6859085.

It is an arithmetic number, because the mean of its divisors is an integer number (41154426).

Almost surely, 2^205772115 is an apocalyptic number.

205772115 is a deficient number, since it is larger than the sum of its proper divisors (123463293).

205772115 is a wasteful number, since it uses less digits than its factorization.

205772115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13718149.

The product of its (nonzero) digits is 4900, while the sum is 30.

The square root of 205772115 is about 14344.7591475075. The cubic root of 205772115 is about 590.3761988380.

The spelling of 205772115 in words is "two hundred five million, seven hundred seventy-two thousand, one hundred fifteen".