Search a number
-
+
13137830 = 25232392
BaseRepresentation
bin110010000111…
…011110100110
3220201110201022
4302013132212
511330402310
61145331142
7216445466
oct62073646
926643638
1013137830
117463712
124496ab2
13294cb84
141a5dba6
151247a55
hexc877a6

13137830 has 24 divisors (see below), whose sum is σ = 24779952. Its totient is φ = 5005616.

The previous prime is 13137823. The next prime is 13137847. The reversal of 13137830 is 3873131.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 13137830.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 54851 + ... + 55089.

It is an arithmetic number, because the mean of its divisors is an integer number (1032498).

Almost surely, 213137830 is an apocalyptic number.

13137830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13137830 is a deficient number, since it is larger than the sum of its proper divisors (11642122).

13137830 is an equidigital number, since it uses as much as digits as its factorization.

13137830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 13137830 is about 3624.6144622566. The cubic root of 13137830 is about 235.9615349548.

The spelling of 13137830 in words is "thirteen million, one hundred thirty-seven thousand, eight hundred thirty".

Divisors: 1 2 5 10 23 46 115 230 239 478 1195 2390 5497 10994 27485 54970 57121 114242 285605 571210 1313783 2627566 6568915 13137830