20471170 has 32 divisors (see below), whose sum is σ = 39084480. Its totient is φ = 7698240.

The previous prime is 20471161. The next prime is 20471183. The reversal of 20471170 is 7117402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30640 + ... + 31300.

It is an arithmetic number, because the mean of its divisors is an integer number (1221390).

Almost surely, 2^20471170 is an apocalyptic number.

20471170 is a deficient number, since it is larger than the sum of its proper divisors (18613310).

20471170 is a wasteful number, since it uses less digits than its factorization.

20471170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 20471170 is about 4524.5077080275. The cubic root of 20471170 is about 273.5568252752.

Adding to 20471170 its reverse (7117402), we get a palindrome (27588572).

The spelling of 20471170 in words is "twenty million, four hundred seventy-one thousand, one hundred seventy".