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12888959 = 13198389
BaseRepresentation
bin110001001010…
…101101111111
3220020211022212
4301022231333
511244421314
61140131035
7214361066
oct61125577
926224285
1012888959
117303736
124396a7b
132893805
1419d71dd
1511e8e3e
hexc4ab7f

12888959 has 4 divisors (see below), whose sum is σ = 12987480. Its totient is φ = 12790440.

The previous prime is 12888943. The next prime is 12888971. The reversal of 12888959 is 95988821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12888959 - 24 = 12888943 is a prime.

It is a super-2 number, since 2×128889592 = 332250528207362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12888979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49064 + ... + 49325.

It is an arithmetic number, because the mean of its divisors is an integer number (3246870).

Almost surely, 212888959 is an apocalyptic number.

12888959 is a deficient number, since it is larger than the sum of its proper divisors (98521).

12888959 is an equidigital number, since it uses as much as digits as its factorization.

12888959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98520.

The product of its digits is 414720, while the sum is 50.

The square root of 12888959 is about 3590.1196358896. The cubic root of 12888959 is about 234.4620803293.

The spelling of 12888959 in words is "twelve million, eight hundred eighty-eight thousand, nine hundred fifty-nine".

Divisors: 1 131 98389 12888959