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13240001 = 431631889
BaseRepresentation
bin110010100000…
…011011000001
3220220122212102
4302200123001
511342140001
61151440145
7220352405
oct62403301
926818772
1013240001
117523455
124526055
132987528
141a89105
151267e6b
hexca06c1

13240001 has 8 divisors (see below), whose sum is σ = 13638240. Its totient is φ = 12845952.

The previous prime is 13239997. The next prime is 13240021. The reversal of 13240001 is 10004231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13240001 - 22 = 13239997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13240021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6065 + ... + 7953.

It is an arithmetic number, because the mean of its divisors is an integer number (1704780).

Almost surely, 213240001 is an apocalyptic number.

It is an amenable number.

13240001 is a deficient number, since it is larger than the sum of its proper divisors (398239).

13240001 is a wasteful number, since it uses less digits than its factorization.

13240001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 13240001 is about 3638.6812171445. The cubic root of 13240001 is about 236.5716356766.

Adding to 13240001 its reverse (10004231), we get a palindrome (23244232).

The spelling of 13240001 in words is "thirteen million, two hundred forty thousand, one".

Divisors: 1 43 163 1889 7009 81227 307907 13240001