205410220 has 24 divisors (see below), whose sum is σ = 436212000. Its totient is φ = 81240192.

The previous prime is 205410209. The next prime is 205410253. The reversal of 205410220 is 22014502.

It is a junction number, because it is equal to n+sod(n) for n = 205410194 and 205410203.

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, 55920 + ... + 59479.

It is an arithmetic number, because the mean of its divisors is an integer number (18175500).

Almost surely, 2^205410220 is an apocalyptic number.

205410220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205410220 is an abundant number, since it is smaller than the sum of its proper divisors (230801780).

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

205410220 is a wasteful number, since it uses less digits than its factorization.

205410220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115497 (or 115495 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 205410220 is about 14332.1394076390. The cubic root of 205410220 is about 590.0298941092.

Adding to 205410220 its reverse (22014502), we get a palindrome (227424722).

The spelling of 205410220 in words is "two hundred five million, four hundred ten thousand, two hundred twenty".