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2808801 = 32312089
BaseRepresentation
bin1010101101101111100001
312021200221200
422231233201
51204340201
6140111413
732605632
oct12555741
95250850
102808801
111649326
12b35569
13774618
14531889
153a7386
hex2adbe1

2808801 has 6 divisors (see below), whose sum is σ = 4057170. Its totient is φ = 1872528.

The previous prime is 2808797. The next prime is 2808809. The reversal of 2808801 is 1088082.

It can be written as a sum of positive squares in only one way, i.e., 1904400 + 904401 = 1380^2 + 951^2 .

It is not a de Polignac number, because 2808801 - 22 = 2808797 is a prime.

2808801 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2808809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156036 + ... + 156053.

It is an arithmetic number, because the mean of its divisors is an integer number (676195).

22808801 is an apocalyptic number.

It is an amenable number.

2808801 is a deficient number, since it is larger than the sum of its proper divisors (1248369).

2808801 is a wasteful number, since it uses less digits than its factorization.

2808801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312095 (or 312092 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 2808801 is about 1675.9477915496. The cubic root of 2808801 is about 141.0934946538.

The spelling of 2808801 in words is "two million, eight hundred eight thousand, eight hundred one".

Divisors: 1 3 9 312089 936267 2808801