205480923 has 16 divisors (see below), whose sum is σ = 276729600. Its totient is φ = 135617184.

The previous prime is 205480907. The next prime is 205480937. The reversal of 205480923 is 329084502.

It is a happy number.

It is not a de Polignac number, because 205480923 - 2⁴ = 205480907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205480963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146178 + ... + 147576.

It is an arithmetic number, because the mean of its divisors is an integer number (17295600).

Almost surely, 2^205480923 is an apocalyptic number.

205480923 is a deficient number, since it is larger than the sum of its proper divisors (71248677).

205480923 is a wasteful number, since it uses less digits than its factorization.

205480923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 205480923 is about 14334.6057846039. The cubic root of 205480923 is about 590.0975832082.

It can be divided in two parts, 205480 and 923, that added together give a triangular number (206403 = T₆₄₂).

The spelling of 205480923 in words is "two hundred five million, four hundred eighty thousand, nine hundred twenty-three".