20264165 has 8 divisors (see below), whose sum is σ = 25596960. Its totient is φ = 15358032.

The previous prime is 20264161. The next prime is 20264171. The reversal of 20264165 is 56146202.

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 20264165 - 2² = 20264161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20264161) 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 7 ways as a sum of consecutive naturals, for example, 106559 + ... + 106748.

It is an arithmetic number, because the mean of its divisors is an integer number (3199620).

Almost surely, 2^20264165 is an apocalyptic number.

It is an amenable number.

20264165 is a deficient number, since it is larger than the sum of its proper divisors (5332795).

20264165 is a wasteful number, since it uses less digits than its factorization.

20264165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213331.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 20264165 is about 4501.5736137489. The cubic root of 20264165 is about 272.6316284653.

The spelling of 20264165 in words is "twenty million, two hundred sixty-four thousand, one hundred sixty-five".