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12869244 = 2232418719
BaseRepresentation
bin110001000101…
…111001111100
3220012211021200
4301011321330
511243303434
61135455500
7214246443
oct61057174
926184250
1012869244
11729a943
124387590
13288784b
1419cdd5a
1511e3199
hexc45e7c

12869244 has 36 divisors (see below), whose sum is σ = 33327840. Its totient is φ = 4184640.

The previous prime is 12869239. The next prime is 12869261. The reversal of 12869244 is 44296821.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×128692442 = 331234882263072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 12869199 and 12869208.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2884 + ... + 5835.

Almost surely, 212869244 is an apocalyptic number.

It is an amenable number.

12869244 is an abundant number, since it is smaller than the sum of its proper divisors (20458596).

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

12869244 is a wasteful number, since it uses less digits than its factorization.

12869244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8770 (or 8765 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 12869244 is about 3587.3728548898. The cubic root of 12869244 is about 234.3424746332.

The spelling of 12869244 in words is "twelve million, eight hundred sixty-nine thousand, two hundred forty-four".

Divisors: 1 2 3 4 6 9 12 18 36 41 82 123 164 246 369 492 738 1476 8719 17438 26157 34876 52314 78471 104628 156942 313884 357479 714958 1072437 1429916 2144874 3217311 4289748 6434622 12869244