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12285613 = 21375749
BaseRepresentation
bin101110110111…
…011010101101
3212010011200201
4232313122231
511121114423
61115153501
7206266054
oct56673255
925104621
1012285613
116a313aa
124145891
132711cc2
1418bb39b
15112a2ad
hexbb76ad

12285613 has 4 divisors (see below), whose sum is σ = 12293500. Its totient is φ = 12277728.

The previous prime is 12285607. The next prime is 12285619. The reversal of 12285613 is 31658221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (12285607) and next prime (12285619).

It can be written as a sum of positive squares in 2 ways, for example, as 362404 + 11923209 = 602^2 + 3453^2 .

It is a cyclic number.

It is not a de Polignac number, because 12285613 - 221 = 10188461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12285619) 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, 738 + ... + 5011.

It is an arithmetic number, because the mean of its divisors is an integer number (3073375).

Almost surely, 212285613 is an apocalyptic number.

It is an amenable number.

12285613 is a deficient number, since it is larger than the sum of its proper divisors (7887).

12285613 is an equidigital number, since it uses as much as digits as its factorization.

12285613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7886.

The product of its digits is 2880, while the sum is 28.

The square root of 12285613 is about 3505.0838791675. The cubic root of 12285613 is about 230.7449882255.

The spelling of 12285613 in words is "twelve million, two hundred eighty-five thousand, six hundred thirteen".

Divisors: 1 2137 5749 12285613