20393170 has 16 divisors (see below), whose sum is σ = 41951808. Its totient is φ = 6991920.

The previous prime is 20393161. The next prime is 20393189. The reversal of 20393170 is 7139302.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 145596 + ... + 145735.

It is an arithmetic number, because the mean of its divisors is an integer number (2621988).

Almost surely, 2^20393170 is an apocalyptic number.

20393170 is an abundant number, since it is smaller than the sum of its proper divisors (21558638).

20393170 is a wasteful number, since it uses less digits than its factorization.

20393170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291345.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 20393170 is about 4515.8797592496. The cubic root of 20393170 is about 273.2089443268.

The spelling of 20393170 in words is "twenty million, three hundred ninety-three thousand, one hundred seventy".