20800773 has 32 divisors (see below), whose sum is σ = 35493120. Its totient is φ = 11793600.

The previous prime is 20800739. The next prime is 20800807. The reversal of 20800773 is 37700802.

It is an interprime number because it is at equal distance from previous prime (20800739) and next prime (20800807).

It is not a de Polignac number, because 20800773 - 2⁶ = 20800709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20800723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29323 + ... + 30023.

It is an arithmetic number, because the mean of its divisors is an integer number (1109160).

Almost surely, 2^20800773 is an apocalyptic number.

It is an amenable number.

20800773 is a deficient number, since it is larger than the sum of its proper divisors (14692347).

20800773 is a wasteful number, since it uses less digits than its factorization.

20800773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874 (or 868 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 20800773 is about 4560.7864453403. The cubic root of 20800773 is about 275.0171801939.

The spelling of 20800773 in words is "twenty million, eight hundred thousand, seven hundred seventy-three".