20295965 has 4 divisors (see below), whose sum is σ = 24355164. Its totient is φ = 16236768.

The previous prime is 20295949. The next prime is 20295967. The reversal of 20295965 is 56959202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56959202 = 2 ⋅28479601.

It can be written as a sum of positive squares in 2 ways, for example, as 12517444 + 7778521 = 3538^2 + 2789^2 .

It is a cyclic number.

It is not a de Polignac number, because 20295965 - 2⁴ = 20295949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20295967) 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 3 ways as a sum of consecutive naturals, for example, 2029592 + ... + 2029601.

It is an arithmetic number, because the mean of its divisors is an integer number (6088791).

Almost surely, 2^20295965 is an apocalyptic number.

It is an amenable number.

20295965 is a deficient number, since it is larger than the sum of its proper divisors (4059199).

20295965 is an equidigital number, since it uses as much as digits as its factorization.

20295965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4059198.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 20295965 is about 4505.1043273159. The cubic root of 20295965 is about 272.7741650514.

The spelling of 20295965 in words is "twenty million, two hundred ninety-five thousand, nine hundred sixty-five".