20803776 has 112 divisors (see below), whose sum is σ = 65739264. Its totient is φ = 5677056.

The previous prime is 20803729. The next prime is 20803777. The reversal of 20803776 is 67730802.

It is a tau number, because it is divible by the number of its divisors (112).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20803777) 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 15 ways as a sum of consecutive naturals, for example, 30576 + ... + 31248.

Almost surely, 2^20803776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20803776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32869632).

20803776 is an abundant number, since it is smaller than the sum of its proper divisors (44935488).

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

20803776 is a wasteful number, since it uses less digits than its factorization.

20803776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718 (or 708 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 20803776 is about 4561.1156529954. The cubic root of 20803776 is about 275.0304142670.

The spelling of 20803776 in words is "twenty million, eight hundred three thousand, seven hundred seventy-six".