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12898115 = 52579623
BaseRepresentation
bin110001001100…
…111101000011
3220021021212222
4301030331003
511300214430
61140241255
7214426556
oct61147503
926237788
1012898115
11730a5aa
1243a022b
132897a29
1419da69d
1511eb9e5
hexc4cf43

12898115 has 4 divisors (see below), whose sum is σ = 15477744. Its totient is φ = 10318488.

The previous prime is 12898111. The next prime is 12898157. The reversal of 12898115 is 51189821.

12898115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12898115 - 22 = 12898111 is a prime.

It is a super-2 number, since 2×128981152 = 332722741106450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12898111) 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, 1289807 + ... + 1289816.

It is an arithmetic number, because the mean of its divisors is an integer number (3869436).

Almost surely, 212898115 is an apocalyptic number.

12898115 is a deficient number, since it is larger than the sum of its proper divisors (2579629).

12898115 is an equidigital number, since it uses as much as digits as its factorization.

12898115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2579628.

The product of its digits is 5760, while the sum is 35.

The square root of 12898115 is about 3591.3945759273. The cubic root of 12898115 is about 234.5175858898.

The spelling of 12898115 in words is "twelve million, eight hundred ninety-eight thousand, one hundred fifteen".

Divisors: 1 5 2579623 12898115