220404632 has 16 divisors (see below), whose sum is σ = 472295760. Its totient is φ = 94459104.

The previous prime is 220404619. The next prime is 220404647. The reversal of 220404632 is 236404022.

220404632 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 220404598 and 220404607.

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 3 ways as a sum of consecutive naturals, for example, 1967843 + ... + 1967954.

It is an arithmetic number, because the mean of its divisors is an integer number (29518485).

Almost surely, 2^220404632 is an apocalyptic number.

It is an amenable number.

220404632 is an abundant number, since it is smaller than the sum of its proper divisors (251891128).

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

220404632 is a wasteful number, since it uses less digits than its factorization.

220404632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3935810 (or 3935806 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 220404632 is about 14846.0308500286. The cubic root of 220404632 is about 604.0509510693.

Adding to 220404632 its reverse (236404022), we get a palindrome (456808654).

The spelling of 220404632 in words is "two hundred twenty million, four hundred four thousand, six hundred thirty-two".