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13120230 = 2352331877
BaseRepresentation
bin110010000011…
…001011100110
3220200120120110
4302003023212
511324321410
61145113450
7216343254
oct62031346
926616513
1013120230
117451472
124488886
132944b66
141a575d4
151242720
hexc832e6

13120230 has 32 divisors (see below), whose sum is σ = 31640544. Its totient is φ = 3481856.

The previous prime is 13120213. The next prime is 13120231. The reversal of 13120230 is 3202131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120231) 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, 6052 + ... + 7928.

It is an arithmetic number, because the mean of its divisors is an integer number (988767).

Almost surely, 213120230 is an apocalyptic number.

13120230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13120230 is an abundant number, since it is smaller than the sum of its proper divisors (18520314).

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

13120230 is a wasteful number, since it uses less digits than its factorization.

13120230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 13120230 is about 3622.1858041796. The cubic root of 13120230 is about 235.8561198070.

Adding to 13120230 its reverse (3202131), we get a palindrome (16322361).

The spelling of 13120230 in words is "thirteen million, one hundred twenty thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 233 466 699 1165 1398 1877 2330 3495 3754 5631 6990 9385 11262 18770 28155 56310 437341 874682 1312023 2186705 2624046 4373410 6560115 13120230