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810530030 = 25312614613
BaseRepresentation
bin110000010011111…
…011010011101110
32002111011012011202
4300103323103232
53124443430110
6212232245502
726041251212
oct6023732356
92074135152
10810530030
11386583232
121a7540892
13cbbcba8b
147990a942
154b2570a5
hex304fb4ee

810530030 has 16 divisors (see below), whose sum is σ = 1506017664. Its totient is φ = 313753440.

The previous prime is 810530011. The next prime is 810530057. The reversal of 810530030 is 30035018.

It is a junction number, because it is equal to n+sod(n) for n = 810529984 and 810530011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1306997 + ... + 1307616.

It is an arithmetic number, because the mean of its divisors is an integer number (94126104).

Almost surely, 2810530030 is an apocalyptic number.

810530030 is a deficient number, since it is larger than the sum of its proper divisors (695487634).

810530030 is a wasteful number, since it uses less digits than its factorization.

810530030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2614651.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 810530030 is about 28469.8090966554. The cubic root of 810530030 is about 932.3730317058.

Adding to 810530030 its reverse (30035018), we get a palindrome (840565048).

The spelling of 810530030 in words is "eight hundred ten million, five hundred thirty thousand, thirty".

Divisors: 1 2 5 10 31 62 155 310 2614613 5229226 13073065 26146130 81053003 162106006 405265015 810530030