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808743945 = 35271198953
BaseRepresentation
bin110000001101000…
…111010000001001
32002100210110010110
4300031013100021
53124014301240
6212130104533
726020132032
oct6015072011
92070713113
10808743945
11385573329
121a6a1b149
13cb724b19
14795a3a89
154b002c80
hex30347409

808743945 has 16 divisors (see below), whose sum is σ = 1298771712. Its totient is φ = 429736320.

The previous prime is 808743913. The next prime is 808743953. The reversal of 808743945 is 549347808.

It is not a de Polignac number, because 808743945 - 25 = 808743913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 808743894 and 808743903.

It is an unprimeable number.

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, 95412 + ... + 103541.

It is an arithmetic number, because the mean of its divisors is an integer number (81173232).

Almost surely, 2808743945 is an apocalyptic number.

It is an amenable number.

808743945 is a deficient number, since it is larger than the sum of its proper divisors (490027767).

808743945 is a wasteful number, since it uses less digits than its factorization.

808743945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199232.

The product of its (nonzero) digits is 967680, while the sum is 48.

The square root of 808743945 is about 28438.4237432387. The cubic root of 808743945 is about 931.6876685724.

The spelling of 808743945 in words is "eight hundred eight million, seven hundred forty-three thousand, nine hundred forty-five".

Divisors: 1 3 5 15 271 813 1355 4065 198953 596859 994765 2984295 53916263 161748789 269581315 808743945