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12128253 = 34399209
BaseRepresentation
bin101110010000…
…111111111101
3211211011211120
4232100333331
511101101003
61111541153
7205042224
oct56207775
924734746
1012128253
116934155
12408a7b9
1326884a7
141879cbb
1510e8853
hexb90ffd

12128253 has 8 divisors (see below), whose sum is σ = 16209600. Its totient is φ = 8066208.

The previous prime is 12128243. The next prime is 12128257. The reversal of 12128253 is 35282121.

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

It is not a de Polignac number, because 12128253 - 26 = 12128189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12128257) 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, 3288 + ... + 5921.

It is an arithmetic number, because the mean of its divisors is an integer number (2026200).

Almost surely, 212128253 is an apocalyptic number.

It is an amenable number.

12128253 is a deficient number, since it is larger than the sum of its proper divisors (4081347).

12128253 is an equidigital number, since it uses as much as digits as its factorization.

12128253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9651.

The product of its digits is 960, while the sum is 24.

The square root of 12128253 is about 3482.5641415486. The cubic root of 12128253 is about 229.7555878757.

The spelling of 12128253 in words is "twelve million, one hundred twenty-eight thousand, two hundred fifty-three".

Divisors: 1 3 439 1317 9209 27627 4042751 12128253