220146204 has 12 divisors (see below), whose sum is σ = 513674504. Its totient is φ = 73382064.

The previous prime is 220146203. The next prime is 220146211. The reversal of 220146204 is 402641022.

220146204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×220146204² = 96928702271219232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220146203) 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, 9172747 + ... + 9172770.

Almost surely, 2^220146204 is an apocalyptic number.

It is an amenable number.

220146204 is an abundant number, since it is smaller than the sum of its proper divisors (293528300).

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

220146204 is a wasteful number, since it uses less digits than its factorization.

220146204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18345524 (or 18345522 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 220146204 is about 14837.3246914665. The cubic root of 220146204 is about 603.8147722303.

Adding to 220146204 its reverse (402641022), we get a palindrome (622787226).

The spelling of 220146204 in words is "two hundred twenty million, one hundred forty-six thousand, two hundred four".