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13302681 = 37633461
BaseRepresentation
bin110010101111…
…101110011001
3221000211211220
4302233232121
511401141211
61153042253
7221033220
oct62575631
927024756
1013302681
117566557
124556389
1329a9c12
141aa3cb7
15127b806
hexcafb99

13302681 has 8 divisors (see below), whose sum is σ = 20270784. Its totient is φ = 7601520.

The previous prime is 13302643. The next prime is 13302683. The reversal of 13302681 is 18620331.

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

It is not a de Polignac number, because 13302681 - 29 = 13302169 is a prime.

It is a super-2 number, since 2×133026812 = 353922643575522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13302683) 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, 316710 + ... + 316751.

It is an arithmetic number, because the mean of its divisors is an integer number (2533848).

Almost surely, 213302681 is an apocalyptic number.

It is an amenable number.

13302681 is a deficient number, since it is larger than the sum of its proper divisors (6968103).

13302681 is an equidigital number, since it uses as much as digits as its factorization.

13302681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633471.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 13302681 is about 3647.2840580355. The cubic root of 13302681 is about 236.9443690753.

The spelling of 13302681 in words is "thirteen million, three hundred two thousand, six hundred eighty-one".

Divisors: 1 3 7 21 633461 1900383 4434227 13302681