Search a number
-
+
808444 = 227132221
BaseRepresentation
bin11000101010111111100
31112001222101
43011113330
5201332234
625154444
76604660
oct3052774
91461871
10808444
1150243a
1232ba24
13223c90
141708a0
1510e814
hexc55fc

808444 has 24 divisors (see below), whose sum is σ = 1742048. Its totient is φ = 319680.

The previous prime is 808441. The next prime is 808459. The reversal of 808444 is 444808.

It is a happy number.

It is a super-2 number, since 2×8084442 = 1307163402272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 747 + ... + 1474.

2808444 is an apocalyptic number.

It is an amenable number.

808444 is an abundant number, since it is smaller than the sum of its proper divisors (933604).

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

808444 is a wasteful number, since it uses less digits than its factorization.

808444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245 (or 2243 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 808444 is about 899.1351400096. The cubic root of 808444 is about 93.1572473640.

It can be divided in two parts, 8084 and 44, that added together give a triangular number (8128 = T127).

The spelling of 808444 in words is "eight hundred eight thousand, four hundred forty-four".

Divisors: 1 2 4 7 13 14 26 28 52 91 182 364 2221 4442 8884 15547 28873 31094 57746 62188 115492 202111 404222 808444