20836875 has 20 divisors (see below), whose sum is σ = 34720136. Its totient is φ = 11112000.

The previous prime is 20836847. The next prime is 20836889. The reversal of 20836875 is 57863802.

It is not a de Polignac number, because 20836875 - 2⁹ = 20836363 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3682 + ... + 7431.

Almost surely, 2^20836875 is an apocalyptic number.

20836875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20836875 is a deficient number, since it is larger than the sum of its proper divisors (13883261).

20836875 is an equidigital number, since it uses as much as digits as its factorization.

20836875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11136 (or 11121 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 20836875 is about 4564.7425995340. The cubic root of 20836875 is about 275.1761956253.

The spelling of 20836875 in words is "twenty million, eight hundred thirty-six thousand, eight hundred seventy-five".