205150520 has 32 divisors (see below), whose sum is σ = 463367520. Its totient is φ = 81744000.

The previous prime is 205150489. The next prime is 205150531. The reversal of 205150520 is 25051502.

205150520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 205150492 and 205150501.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 770 + ... + 20270.

It is an arithmetic number, because the mean of its divisors is an integer number (14480235).

Almost surely, 2^205150520 is an apocalyptic number.

205150520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205150520 is an abundant number, since it is smaller than the sum of its proper divisors (258217000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205150520 is a wasteful number, since it uses less digits than its factorization.

205150520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19775 (or 19771 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 205150520 is about 14323.0764851690. The cubic root of 205150520 is about 589.7811311128.

The spelling of 205150520 in words is "two hundred five million, one hundred fifty thousand, five hundred twenty".