220503400 has 48 divisors (see below), whose sum is σ = 552113100. Its totient is φ = 81415680.

The previous prime is 220503397. The next prime is 220503427. The reversal of 220503400 is 4305022.

220503400 is digitally balanced in base 3, 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 6 ways, for example, as 9498724 + 211004676 = 3082^2 + 14526^2 .

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 11 ways as a sum of consecutive naturals, for example, 39805 + ... + 45004.

Almost surely, 2^220503400 is an apocalyptic number.

220503400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220503400 is an abundant number, since it is smaller than the sum of its proper divisors (331609700).

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

220503400 is a wasteful number, since it uses less digits than its factorization.

220503400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84838 (or 84829 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 220503400 is about 14849.3568884312. The cubic root of 220503400 is about 604.1411669512.

Adding to 220503400 its reverse (4305022), we get a palindrome (224808422).

The spelling of 220503400 in words is "two hundred twenty million, five hundred three thousand, four hundred".