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13228430 = 251322843
BaseRepresentation
bin110010011101…
…100110001110
3220220001222212
4302131212032
511341302210
61151310422
7220303565
oct62354616
926801885
1013228430
117515796
12451b412
132982197
141a84bdc
151264805
hexc9d98e

13228430 has 8 divisors (see below), whose sum is σ = 23811192. Its totient is φ = 5291368.

The previous prime is 13228421. The next prime is 13228433. The reversal of 13228430 is 3482231.

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

It is a super-3 number, since 3×132284303 (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13228396 and 13228405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13228433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 661412 + ... + 661431.

It is an arithmetic number, because the mean of its divisors is an integer number (2976399).

Almost surely, 213228430 is an apocalyptic number.

13228430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13228430 is a deficient number, since it is larger than the sum of its proper divisors (10582762).

13228430 is a wasteful number, since it uses less digits than its factorization.

13228430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322850.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 13228430 is about 3637.0908704623. The cubic root of 13228430 is about 236.5026989190.

The spelling of 13228430 in words is "thirteen million, two hundred twenty-eight thousand, four hundred thirty".

Divisors: 1 2 5 10 1322843 2645686 6614215 13228430