20327965 has 16 divisors (see below), whose sum is σ = 27952128. Its totient is φ = 13902336.

The previous prime is 20327963. The next prime is 20327969. The reversal of 20327965 is 56972302.

It is a happy number.

It is not a de Polignac number, because 20327965 - 2¹ = 20327963 is a prime.

It is a super-2 number, since 2×20327965² = 826452322082450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20327965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20327963) 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 15 ways as a sum of consecutive naturals, for example, 23124 + ... + 23986.

It is an arithmetic number, because the mean of its divisors is an integer number (1747008).

Almost surely, 2^20327965 is an apocalyptic number.

It is an amenable number.

20327965 is a deficient number, since it is larger than the sum of its proper divisors (7624163).

20327965 is an equidigital number, since it uses as much as digits as its factorization.

20327965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 20327965 is about 4508.6544555998. The cubic root of 20327965 is about 272.9174478802.

The spelling of 20327965 in words is "twenty million, three hundred twenty-seven thousand, nine hundred sixty-five".