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810830904 = 233132199909
BaseRepresentation
bin110000010101000…
…100110000111000
32002111201110220020
4300111010300320
53130033042104
6212242530440
726043643332
oct6025046070
92074643806
10810830904
11386769294
121a7666a20
13cbca5a00
1479988452
154b2b62d9
hex30544c38

810830904 has 48 divisors (see below), whose sum is σ = 2195011800. Its totient is φ = 249485184.

The previous prime is 810830893. The next prime is 810830927. The reversal of 810830904 is 409038018.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 95899 + ... + 104010.

Almost surely, 2810830904 is an apocalyptic number.

It is an amenable number.

810830904 is an abundant number, since it is smaller than the sum of its proper divisors (1384180896).

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

810830904 is a wasteful number, since it uses less digits than its factorization.

810830904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199944 (or 199927 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 810830904 is about 28475.0926951959. The cubic root of 810830904 is about 932.4883850710.

The spelling of 810830904 in words is "eight hundred ten million, eight hundred thirty thousand, nine hundred four".

Divisors: 1 2 3 4 6 8 12 13 24 26 39 52 78 104 156 169 312 338 507 676 1014 1352 2028 4056 199909 399818 599727 799636 1199454 1599272 2398908 2598817 4797816 5197634 7796451 10395268 15592902 20790536 31185804 33784621 62371608 67569242 101353863 135138484 202707726 270276968 405415452 810830904