205748090 has 16 divisors (see below), whose sum is σ = 372211200. Its totient is φ = 81884880.

The previous prime is 205748071. The next prime is 205748141. The reversal of 205748090 is 90847502.

It is a happy number.

205748090 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 205748090.

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, 49706 + ... + 53685.

It is an arithmetic number, because the mean of its divisors is an integer number (23263200).

Almost surely, 2^205748090 is an apocalyptic number.

205748090 is a deficient number, since it is larger than the sum of its proper divisors (166463110).

205748090 is a wasteful number, since it uses less digits than its factorization.

205748090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103597.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 205748090 is about 14343.9217092119. The cubic root of 205748090 is about 590.3532214127.

The spelling of 205748090 in words is "two hundred five million, seven hundred forty-eight thousand, ninety".