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12860830 = 253734759
BaseRepresentation
bin110001000011…
…110110011110
3220012101202001
4301003312132
511243021310
61135352514
7214213063
oct61036636
926171661
1012860830
117294594
12438273a
132883a78
1419cac6a
1511e093a
hexc43d9e

12860830 has 16 divisors (see below), whose sum is σ = 23775840. Its totient is φ = 5005152.

The previous prime is 12860819. The next prime is 12860831. The reversal of 12860830 is 3806821.

It is a super-3 number, since 3×128608303 (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12860831) 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 7 ways as a sum of consecutive naturals, for example, 17010 + ... + 17749.

It is an arithmetic number, because the mean of its divisors is an integer number (1485990).

Almost surely, 212860830 is an apocalyptic number.

12860830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12860830 is a deficient number, since it is larger than the sum of its proper divisors (10915010).

12860830 is a wasteful number, since it uses less digits than its factorization.

12860830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34803.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 12860830 is about 3586.1999386537. The cubic root of 12860830 is about 234.2913919264.

The spelling of 12860830 in words is "twelve million, eight hundred sixty thousand, eight hundred thirty".

Divisors: 1 2 5 10 37 74 185 370 34759 69518 173795 347590 1286083 2572166 6430415 12860830