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13020230810 = 2517372069989
BaseRepresentation
bin11000010000001000…
…01111010010011010
31020121101212020220202
430020010033102122
5203131134341220
65551552422202
7640440064406
oct141004172232
936541766822
1013020230810
115581643134
122634547962
1312c66361b2
148b7314106
155130eb275
hex30810f49a

13020230810 has 32 divisors (see below), whose sum is σ = 25485716880. Its totient is φ = 4769252352.

The previous prime is 13020230749. The next prime is 13020230897. The reversal of 13020230810 is 1803202031.

It can be written as a sum of positive squares in 8 ways, for example, as 5891637049 + 7128593761 = 76757^2 + 84431^2 .

It is a super-2 number, since 2×130202308102 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1028705 + ... + 1041284.

Almost surely, 213020230810 is an apocalyptic number.

13020230810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13020230810 is a deficient number, since it is larger than the sum of its proper divisors (12465486070).

13020230810 is a wasteful number, since it uses less digits than its factorization.

13020230810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2070050.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 13020230810 its reverse (1803202031), we get a palindrome (14823432841).

The spelling of 13020230810 in words is "thirteen billion, twenty million, two hundred thirty thousand, eight hundred ten".

Divisors: 1 2 5 10 17 34 37 74 85 170 185 370 629 1258 3145 6290 2069989 4139978 10349945 20699890 35189813 70379626 76589593 153179186 175949065 351898130 382947965 765895930 1302023081 2604046162 6510115405 13020230810