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12860538 = 235693767
BaseRepresentation
bin110001000011…
…110001111010
3220012101100020
4301003301322
511243014123
61135351310
7214212165
oct61036172
926171306
1012860538
117294349
124382536
1328838b2
1419caadc
1511e07e3
hexc43c7a

12860538 has 16 divisors (see below), whose sum is σ = 25773120. Its totient is φ = 4278176.

The previous prime is 12860531. The next prime is 12860539. The reversal of 12860538 is 83506821.

It is a happy number.

12860538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12860499 and 12860508.

It is not an unprimeable number, because it can be changed into a prime (12860531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1531 + ... + 5297.

It is an arithmetic number, because the mean of its divisors is an integer number (1610820).

Almost surely, 212860538 is an apocalyptic number.

12860538 is an abundant number, since it is smaller than the sum of its proper divisors (12912582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12860538 is a wasteful number, since it uses less digits than its factorization.

12860538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4341.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 12860538 is about 3586.1592268052. The cubic root of 12860538 is about 234.2896187488.

The spelling of 12860538 in words is "twelve million, eight hundred sixty thousand, five hundred thirty-eight".

Divisors: 1 2 3 6 569 1138 1707 3414 3767 7534 11301 22602 2143423 4286846 6430269 12860538