20475166 has 8 divisors (see below), whose sum is σ = 30735144. Its totient is φ = 10230120.

The previous prime is 20475163. The next prime is 20475167. The reversal of 20475166 is 66157402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20475163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 796 + ... + 6448.

It is an arithmetic number, because the mean of its divisors is an integer number (3841893).

Almost surely, 2^20475166 is an apocalyptic number.

20475166 is a deficient number, since it is larger than the sum of its proper divisors (10259978).

20475166 is a wasteful number, since it uses less digits than its factorization.

20475166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7466.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 20475166 is about 4524.9492814837. The cubic root of 20475166 is about 273.5746236710.

The spelling of 20475166 in words is "twenty million, four hundred seventy-five thousand, one hundred sixty-six".