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815830341 = 31941349093
BaseRepresentation
bin110000101000001…
…001010101000101
32002212010110211120
4300220021111011
53132323032331
6212542024153
726134305054
oct6050112505
92085113746
10815830341
11389573457
121a9278059
13100036461
147a4ca39b
154b952796
hex30a09545

815830341 has 16 divisors (see below), whose sum is σ = 1172955840. Its totient is φ = 502692480.

The previous prime is 815830331. The next prime is 815830343. The reversal of 815830341 is 143038518.

It is not a de Polignac number, because 815830341 - 215 = 815797573 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815830343) by changing a digit.

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, 172210 + ... + 176883.

It is an arithmetic number, because the mean of its divisors is an integer number (73309740).

Almost surely, 2815830341 is an apocalyptic number.

It is an amenable number.

815830341 is a deficient number, since it is larger than the sum of its proper divisors (357125499).

815830341 is a wasteful number, since it uses less digits than its factorization.

815830341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349156.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 815830341 is about 28562.7439333128. The cubic root of 815830341 is about 934.4009778962.

Adding to 815830341 its reverse (143038518), we get a palindrome (958868859).

The spelling of 815830341 in words is "eight hundred fifteen million, eight hundred thirty thousand, three hundred forty-one".

Divisors: 1 3 19 41 57 123 779 2337 349093 1047279 6632767 14312813 19898301 42938439 271943447 815830341