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13042837 = 296173101
BaseRepresentation
bin110001110000…
…010010010101
3220112122102001
4301300102111
511314332322
61143315301
7215601523
oct61602225
926478361
1013042837
1173a9305
12444bb31
132918872
141a37313
151229827
hexc70495

13042837 has 16 divisors (see below), whose sum is σ = 14039280. Its totient is φ = 12096000.

The previous prime is 13042819. The next prime is 13042853. The reversal of 13042837 is 73824031.

It can be written as a sum of positive squares in 8 ways, for example, as 17956 + 13024881 = 134^2 + 3609^2 .

It is a cyclic number.

It is not a de Polignac number, because 13042837 - 211 = 13040789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13042807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129087 + ... + 129187.

It is an arithmetic number, because the mean of its divisors is an integer number (877455).

Almost surely, 213042837 is an apocalyptic number.

It is an amenable number.

13042837 is a deficient number, since it is larger than the sum of its proper divisors (996443).

13042837 is a wasteful number, since it uses less digits than its factorization.

13042837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 13042837 is about 3611.4868129345. The cubic root of 13042837 is about 235.3914525984.

Adding to 13042837 its reverse (73824031), we get a palindrome (86866868).

The spelling of 13042837 in words is "thirteen million, forty-two thousand, eight hundred thirty-seven".

Divisors: 1 29 61 73 101 1769 2117 2929 4453 6161 7373 129137 178669 213817 449753 13042837