204402166 has 4 divisors (see below), whose sum is σ = 306603252. Its totient is φ = 102201082.

The previous prime is 204402157. The next prime is 204402257. The reversal of 204402166 is 661204402.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×204402166³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 204402166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51100540 + ... + 51100543.

It is an arithmetic number, because the mean of its divisors is an integer number (76650813).

Almost surely, 2^204402166 is an apocalyptic number.

204402166 is a deficient number, since it is larger than the sum of its proper divisors (102201086).

204402166 is a wasteful number, since it uses less digits than its factorization.

204402166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102201085.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 204402166 is about 14296.9285512658. The cubic root of 204402166 is about 589.0631171174.

Adding to 204402166 its reverse (661204402), we get a palindrome (865606568).

The spelling of 204402166 in words is "two hundred four million, four hundred two thousand, one hundred sixty-six".