20848685 has 24 divisors (see below), whose sum is σ = 29566944. Its totient is φ = 13990080.

The previous prime is 20848657. The next prime is 20848693. The reversal of 20848685 is 58684802.

It is not a de Polignac number, because 20848685 - 2⁶ = 20848621 is a prime.

It is a Curzon number.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 8174 + ... + 10416.

It is an arithmetic number, because the mean of its divisors is an integer number (1231956).

Almost surely, 2^20848685 is an apocalyptic number.

It is an amenable number.

20848685 is a deficient number, since it is larger than the sum of its proper divisors (8718259).

20848685 is a wasteful number, since it uses less digits than its factorization.

20848685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2285 (or 2272 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 41.

The square root of 20848685 is about 4566.0360270151. The cubic root of 20848685 is about 275.2281742622.

The spelling of 20848685 in words is "twenty million, eight hundred forty-eight thousand, six hundred eighty-five".