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13290249 = 37798011
BaseRepresentation
bin110010101100…
…101100001001
3221000012210110
4302230230021
511400241444
61152504533
7220652040
oct62545411
927005713
1013290249
117558185
12454b149
1329a436b
141a9d557
151277cb9
hexcacb09

13290249 has 16 divisors (see below), whose sum is σ = 20510720. Its totient is φ = 7497360.

The previous prime is 13290239. The next prime is 13290283. The reversal of 13290249 is 94209231.

It is not a de Polignac number, because 13290249 - 25 = 13290217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13290229) 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, 2347 + ... + 5664.

It is an arithmetic number, because the mean of its divisors is an integer number (1281920).

Almost surely, 213290249 is an apocalyptic number.

It is an amenable number.

13290249 is a deficient number, since it is larger than the sum of its proper divisors (7220471).

13290249 is an equidigital number, since it uses as much as digits as its factorization.

13290249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8100.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 13290249 is about 3645.5793778219. The cubic root of 13290249 is about 236.8705340716.

The spelling of 13290249 in words is "thirteen million, two hundred ninety thousand, two hundred forty-nine".

Divisors: 1 3 7 21 79 237 553 1659 8011 24033 56077 168231 632869 1898607 4430083 13290249