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12701289 = 331136573
BaseRepresentation
bin110000011100…
…111001101001
3212220021220010
4300130321221
511222420124
61132122133
7212646666
oct60347151
925807803
1012701289
117195737
124306349
132829273
141988a6d
1511ad529
hexc1ce69

12701289 has 8 divisors (see below), whose sum is σ = 17481472. Its totient is φ = 8194320.

The previous prime is 12701287. The next prime is 12701317. The reversal of 12701289 is 98210721.

12701289 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 is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12701289 - 21 = 12701287 is a prime.

It is a super-2 number, since 2×127012892 = 322645484523042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12701287) 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, 68194 + ... + 68379.

It is an arithmetic number, because the mean of its divisors is an integer number (2185184).

Almost surely, 212701289 is an apocalyptic number.

It is an amenable number.

12701289 is a deficient number, since it is larger than the sum of its proper divisors (4780183).

12701289 is a wasteful number, since it uses less digits than its factorization.

12701289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136607.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 12701289 is about 3563.8867827135. The cubic root of 12701289 is about 233.3185484963.

The spelling of 12701289 in words is "twelve million, seven hundred one thousand, two hundred eighty-nine".

Divisors: 1 3 31 93 136573 409719 4233763 12701289