20475206 has 8 divisors (see below), whose sum is σ = 30799440. Its totient is φ = 10208728.

The previous prime is 20475197. The next prime is 20475253. The reversal of 20475206 is 60257402.

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

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, 13541 + ... + 14976.

It is an arithmetic number, because the mean of its divisors is an integer number (3849930).

Almost surely, 2^20475206 is an apocalyptic number.

20475206 is a deficient number, since it is larger than the sum of its proper divisors (10324234).

20475206 is a wasteful number, since it uses less digits than its factorization.

20475206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28878.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 20475206 is about 4524.9537014206. The cubic root of 20475206 is about 273.5748018214.

The spelling of 20475206 in words is "twenty million, four hundred seventy-five thousand, two hundred six".