205540062 has 64 divisors (see below), whose sum is σ = 532600320. Its totient is φ = 51352704.

The previous prime is 205540061. The next prime is 205540063. The reversal of 205540062 is 260045502.

It is an interprime number because it is at equal distance from previous prime (205540061) and next prime (205540063).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205540061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 468 + ... + 20280.

It is an arithmetic number, because the mean of its divisors is an integer number (8321880).

Almost surely, 2^205540062 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205540062, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266300160).

205540062 is an abundant number, since it is smaller than the sum of its proper divisors (327060258).

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

205540062 is a wasteful number, since it uses less digits than its factorization.

205540062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19857.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 205540062 is about 14336.6684414476. The cubic root of 205540062 is about 590.1541893285.

Adding to 205540062 its reverse (260045502), we get a palindrome (465585564).

The spelling of 205540062 in words is "two hundred five million, five hundred forty thousand, sixty-two".