20848686 has 16 divisors (see below), whose sum is σ = 42824784. Its totient is φ = 6761664.

The previous prime is 20848657. The next prime is 20848693. The reversal of 20848686 is 68684802.

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 7 ways as a sum of consecutive naturals, for example, 46735 + ... + 47178.

It is an arithmetic number, because the mean of its divisors is an integer number (2676549).

Almost surely, 2^20848686 is an apocalyptic number.

20848686 is an abundant number, since it is smaller than the sum of its proper divisors (21976098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20848686 is a wasteful number, since it uses less digits than its factorization.

20848686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93955.

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 20848686 is about 4566.0361365193. The cubic root of 20848686 is about 275.2281786626.

The spelling of 20848686 in words is "twenty million, eight hundred forty-eight thousand, six hundred eighty-six".