220243404 has 12 divisors (see below), whose sum is σ = 513901304. Its totient is φ = 73414464.

The previous prime is 220243403. The next prime is 220243411. The reversal of 220243404 is 404342022.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (220243403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9176797 + ... + 9176820.

Almost surely, 2^220243404 is an apocalyptic number.

It is an amenable number.

220243404 is an abundant number, since it is smaller than the sum of its proper divisors (293657900).

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

220243404 is a wasteful number, since it uses less digits than its factorization.

220243404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18353624 (or 18353622 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 220243404 is about 14840.5998531057. The cubic root of 220243404 is about 603.9036255455.

Adding to 220243404 its reverse (404342022), we get a palindrome (624585426).

The spelling of 220243404 in words is "two hundred twenty million, two hundred forty-three thousand, four hundred four".