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12130454 = 27866461
BaseRepresentation
bin101110010001…
…100010010110
3211211021212002
4232101202112
511101133304
61111555302
7205051520
oct56214226
924737762
1012130454
116935876
12408bb32
1326894ab
14187aa10
1510e931e
hexb91896

12130454 has 8 divisors (see below), whose sum is σ = 20795088. Its totient is φ = 5198760.

The previous prime is 12130441. The next prime is 12130463. The reversal of 12130454 is 45403121.

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

It is a super-2 number, since 2×121304542 = 294295828492232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 433217 + ... + 433244.

It is an arithmetic number, because the mean of its divisors is an integer number (2599386).

Almost surely, 212130454 is an apocalyptic number.

12130454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12130454 is a deficient number, since it is larger than the sum of its proper divisors (8664634).

12130454 is an equidigital number, since it uses as much as digits as its factorization.

12130454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866470.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 12130454 is about 3482.8801300073. The cubic root of 12130454 is about 229.7694854931.

Adding to 12130454 its reverse (45403121), we get a palindrome (57533575).

The spelling of 12130454 in words is "twelve million, one hundred thirty thousand, four hundred fifty-four".

Divisors: 1 2 7 14 866461 1732922 6065227 12130454