20854773 has 16 divisors (see below), whose sum is σ = 31651200. Its totient is φ = 13563360.

The previous prime is 20854739. The next prime is 20854843. The reversal of 20854773 is 37745802.

It is not a de Polignac number, because 20854773 - 2¹⁸ = 20592629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20854073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8313 + ... + 10526.

It is an arithmetic number, because the mean of its divisors is an integer number (1978200).

Almost surely, 2^20854773 is an apocalyptic number.

It is an amenable number.

20854773 is a deficient number, since it is larger than the sum of its proper divisors (10796427).

20854773 is a wasteful number, since it uses less digits than its factorization.

20854773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18889 (or 18883 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 20854773 is about 4566.7026397610. The cubic root of 20854773 is about 275.2549613402.

The spelling of 20854773 in words is "twenty million, eight hundred fifty-four thousand, seven hundred seventy-three".