220405050 has 60 divisors (see below), whose sum is σ = 612410766. Its totient is φ = 58773600.

The previous prime is 220405019. The next prime is 220405063. The reversal of 220405050 is 50504022.

220405050 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 199911321 + 20493729 = 14139^2 + 4527^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 23161 + ... + 31260.

Almost surely, 2^220405050 is an apocalyptic number.

220405050 is an abundant number, since it is smaller than the sum of its proper divisors (392005716).

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

220405050 is a wasteful number, since it uses less digits than its factorization.

220405050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54445 (or 54431 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 220405050 is about 14846.0449278587. The cubic root of 220405050 is about 604.0513329323.

Adding to 220405050 its reverse (50504022), we get a palindrome (270909072).

The spelling of 220405050 in words is "two hundred twenty million, four hundred five thousand, fifty".