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12830715 = 3252391193
BaseRepresentation
bin110000111100…
…011111111011
3220010212102200
4300330133323
511241040330
61135001243
7214026222
oct60743773
926125380
1012830715
1172739a7
124369223
132873151
1419bdcb9
1511d6a60
hexc3c7fb

12830715 has 24 divisors (see below), whose sum is σ = 22351680. Its totient is φ = 6808704.

The previous prime is 12830707. The next prime is 12830729. The reversal of 12830715 is 51703821.

It is not a de Polignac number, because 12830715 - 23 = 12830707 is a prime.

It is a super-2 number, since 2×128307152 = 329254494822450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10159 + ... + 11351.

It is an arithmetic number, because the mean of its divisors is an integer number (931320).

Almost surely, 212830715 is an apocalyptic number.

12830715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12830715 is a deficient number, since it is larger than the sum of its proper divisors (9520965).

12830715 is a wasteful number, since it uses less digits than its factorization.

12830715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443 (or 1440 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 12830715 is about 3581.9987437184. The cubic root of 12830715 is about 234.1083762720.

The spelling of 12830715 in words is "twelve million, eight hundred thirty thousand, seven hundred fifteen".

Divisors: 1 3 5 9 15 45 239 717 1193 1195 2151 3579 3585 5965 10737 10755 17895 53685 285127 855381 1425635 2566143 4276905 12830715