20845716 has 24 divisors (see below), whose sum is σ = 48734784. Its totient is φ = 6935040.

The previous prime is 20845711. The next prime is 20845771. The reversal of 20845716 is 61754802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20845711) 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 7 ways as a sum of consecutive naturals, for example, 6196 + ... + 8948.

It is an arithmetic number, because the mean of its divisors is an integer number (2030616).

Almost surely, 2^20845716 is an apocalyptic number.

It is an amenable number.

20845716 is an abundant number, since it is smaller than the sum of its proper divisors (27889068).

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

20845716 is a wasteful number, since it uses less digits than its factorization.

20845716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3391 (or 3389 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 20845716 is about 4565.7108975493. The cubic root of 20845716 is about 275.2151088300.

The spelling of 20845716 in words is "twenty million, eight hundred forty-five thousand, seven hundred sixteen".