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12915430 = 2511117413
BaseRepresentation
bin110001010001…
…001011100110
3220022011122021
4301101023212
511301243210
61140453354
7214531213
oct61211346
926264567
1012915430
117321610
1243aa25a
1328a2888
141a02b0a
151201bda
hexc512e6

12915430 has 16 divisors (see below), whose sum is σ = 25361424. Its totient is φ = 4696480.

The previous prime is 12915403. The next prime is 12915433. The reversal of 12915430 is 3451921.

It is a junction number, because it is equal to n+sod(n) for n = 12915395 and 12915404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12915433) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 58597 + ... + 58816.

It is an arithmetic number, because the mean of its divisors is an integer number (1585089).

Almost surely, 212915430 is an apocalyptic number.

12915430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12915430 is a deficient number, since it is larger than the sum of its proper divisors (12445994).

12915430 is a wasteful number, since it uses less digits than its factorization.

12915430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117431.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 12915430 is about 3593.8043908927. The cubic root of 12915430 is about 234.6224812247.

The spelling of 12915430 in words is "twelve million, nine hundred fifteen thousand, four hundred thirty".

Divisors: 1 2 5 10 11 22 55 110 117413 234826 587065 1174130 1291543 2583086 6457715 12915430