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808381 = 7235021
BaseRepresentation
bin11000101010110111101
31112001220001
43011112331
5201332011
625154301
76604540
oct3052675
91461801
10808381
11502392
1232b991
13223c42
14170857
1510e7c1
hexc55bd

808381 has 8 divisors (see below), whose sum is σ = 964224. Its totient is φ = 662640.

The previous prime is 808373. The next prime is 808391. The reversal of 808381 is 183808.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 808381 - 23 = 808373 is a prime.

It is a super-2 number, since 2×8083812 = 1306959682322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808351) 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, 2350 + ... + 2671.

It is an arithmetic number, because the mean of its divisors is an integer number (120528).

2808381 is an apocalyptic number.

It is an amenable number.

808381 is a deficient number, since it is larger than the sum of its proper divisors (155843).

808381 is a wasteful number, since it uses less digits than its factorization.

808381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5051.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 808381 is about 899.1001056612. The cubic root of 808381 is about 93.1548274647.

The spelling of 808381 in words is "eight hundred eight thousand, three hundred eighty-one".

Divisors: 1 7 23 161 5021 35147 115483 808381