405628166 has 4 divisors (see below), whose sum is σ = 608442252. Its totient is φ = 202814082.

The previous prime is 405628163. The next prime is 405628187. The reversal of 405628166 is 661826504.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405628163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101407040 + ... + 101407043.

It is an arithmetic number, because the mean of its divisors is an integer number (152110563).

Almost surely, 2^405628166 is an apocalyptic number.

405628166 is a deficient number, since it is larger than the sum of its proper divisors (202814086).

405628166 is a wasteful number, since it uses less digits than its factorization.

405628166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202814085.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 405628166 is about 20140.2126602477. The cubic root of 405628166 is about 740.2459408961.

The spelling of 405628166 in words is "four hundred five million, six hundred twenty-eight thousand, one hundred sixty-six".