20000995 has 16 divisors (see below), whose sum is σ = 27502848. Its totient is φ = 13678560.

The previous prime is 20000971. The next prime is 20001001. The reversal of 20000995 is 59900002.

It is not a de Polignac number, because 20000995 - 2⁷ = 20000867 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23772 + ... + 24598.

It is an arithmetic number, because the mean of its divisors is an integer number (1718928).

Almost surely, 2^20000995 is an apocalyptic number.

20000995 is a deficient number, since it is larger than the sum of its proper divisors (7501853).

20000995 is an equidigital number, since it uses as much as digits as its factorization.

20000995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 20000995 is about 4472.2471979979. The cubic root of 20000995 is about 271.4462629941.

Adding to 20000995 its reverse (59900002), we get a palindrome (79900997).

The spelling of 20000995 in words is "twenty million, nine hundred ninety-five", and thus it is an aban number.