220401204 has 12 divisors (see below), whose sum is σ = 514269504. Its totient is φ = 73467064.

The previous prime is 220401173. The next prime is 220401221. The reversal of 220401204 is 402104022.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9183372 + ... + 9183395.

It is an arithmetic number, because the mean of its divisors is an integer number (42855792).

Almost surely, 2^220401204 is an apocalyptic number.

It is an amenable number.

220401204 is an abundant number, since it is smaller than the sum of its proper divisors (293868300).

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

220401204 is a wasteful number, since it uses less digits than its factorization.

220401204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18366774 (or 18366772 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 220401204 is about 14845.9153978460. The cubic root of 220401204 is about 604.0478194089.

Adding to 220401204 its reverse (402104022), we get a palindrome (622505226).

The spelling of 220401204 in words is "two hundred twenty million, four hundred one thousand, two hundred four".