20479165 has 8 divisors (see below), whose sum is σ = 28085760. Its totient is φ = 14042832.

The previous prime is 20479163. The next prime is 20479183. The reversal of 20479165 is 56197402.

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

It is a cyclic number.

It is not a de Polignac number, because 20479165 - 2¹ = 20479163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20479165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20479163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292525 + ... + 292594.

It is an arithmetic number, because the mean of its divisors is an integer number (3510720).

Almost surely, 2^20479165 is an apocalyptic number.

It is an amenable number.

20479165 is a deficient number, since it is larger than the sum of its proper divisors (7606595).

20479165 is an equidigital number, since it uses as much as digits as its factorization.

20479165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585131.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 20479165 is about 4525.3911433157. The cubic root of 20479165 is about 273.5924331107.

The spelling of 20479165 in words is "twenty million, four hundred seventy-nine thousand, one hundred sixty-five".