20846853 has 12 divisors (see below), whose sum is σ = 31150860. Its totient is φ = 13418496.

The previous prime is 20846851. The next prime is 20846869. The reversal of 20846853 is 35864802.

It can be written as a sum of positive squares in 2 ways, for example, as 5846724 + 15000129 = 2418^2 + 3873^2 .

It is not a de Polignac number, because 20846853 - 2¹ = 20846851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20846851) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 39676 + ... + 40197.

It is an arithmetic number, because the mean of its divisors is an integer number (2595905).

Almost surely, 2^20846853 is an apocalyptic number.

It is an amenable number.

20846853 is a deficient number, since it is larger than the sum of its proper divisors (10304007).

20846853 is a wasteful number, since it uses less digits than its factorization.

20846853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79908 (or 79905 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 20846853 is about 4565.8354109626. The cubic root of 20846853 is about 275.2201124782.

The spelling of 20846853 in words is "twenty million, eight hundred forty-six thousand, eight hundred fifty-three".