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13230297 = 34163337
BaseRepresentation
bin110010011110…
…000011011001
3220220011120000
4302132003121
511341332142
61151323213
7220312203
oct62360331
926804500
1013230297
117517133
124520509
132982ca2
141a85773
15126514c
hexc9e0d9

13230297 has 10 divisors (see below), whose sum is σ = 19763898. Its totient is φ = 8820144.

The previous prime is 13230277. The next prime is 13230299. The reversal of 13230297 is 79203231.

13230297 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 13220496 + 9801 = 3636^2 + 99^2 .

It is not a de Polignac number, because 13230297 - 27 = 13230169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 13230297.

It is not an unprimeable number, because it can be changed into a prime (13230299) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 81588 + ... + 81749.

Almost surely, 213230297 is an apocalyptic number.

It is an amenable number.

13230297 is a deficient number, since it is larger than the sum of its proper divisors (6533601).

13230297 is an equidigital number, since it uses as much as digits as its factorization.

13230297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163349 (or 163340 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 13230297 is about 3637.3475225774. The cubic root of 13230297 is about 236.5138246980.

The spelling of 13230297 in words is "thirteen million, two hundred thirty thousand, two hundred ninety-seven".

Divisors: 1 3 9 27 81 163337 490011 1470033 4410099 13230297