220400403800 has 48 divisors (see below), whose sum is σ = 512852565960. Its totient is φ = 88087623680.

The previous prime is 220400403781. The next prime is 220400403851. The reversal of 220400403800 is 8304004022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209354 + ... + 696153.

Almost surely, 2^220400403800 is an apocalyptic number.

220400403800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220400403800 is an abundant number, since it is smaller than the sum of its proper divisors (292452162160).

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

220400403800 is a wasteful number, since it uses less digits than its factorization.

220400403800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906740 (or 906731 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 220400403800 its reverse (8304004022), we get a palindrome (228704407822).

The spelling of 220400403800 in words is "two hundred twenty billion, four hundred million, four hundred three thousand, eight hundred".