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12869540 = 2254713691
BaseRepresentation
bin110001000101…
…111110100100
3220012211200122
4301011332210
511243311130
61135501112
7214250345
oct61057644
926184618
1012869540
1172a0092
124387798
132887a18
1419d00cc
1511e32e5
hexc45fa4

12869540 has 24 divisors (see below), whose sum is σ = 27603072. Its totient is φ = 5037920.

The previous prime is 12869537. The next prime is 12869567. The reversal of 12869540 is 4596821.

12869540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×128695403 (a number of 22 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12869540.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5906 + ... + 7785.

It is an arithmetic number, because the mean of its divisors is an integer number (1150128).

Almost surely, 212869540 is an apocalyptic number.

12869540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12869540 is an abundant number, since it is smaller than the sum of its proper divisors (14733532).

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

12869540 is a wasteful number, since it uses less digits than its factorization.

12869540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13747 (or 13745 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 12869540 is about 3587.4141104701. The cubic root of 12869540 is about 234.3442712899.

The spelling of 12869540 in words is "twelve million, eight hundred sixty-nine thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 47 94 188 235 470 940 13691 27382 54764 68455 136910 273820 643477 1286954 2573908 3217385 6434770 12869540