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12853980 = 2232571411
BaseRepresentation
bin110001000010…
…001011011100
3220012001100100
4301002023130
511242311410
61135301100
7214154106
oct61021334
926161310
1012853980
11728a427
12437a790
132880909
1419c8576
1511dd8c0
hexc422dc

12853980 has 36 divisors (see below), whose sum is σ = 38990952. Its totient is φ = 3427680.

The previous prime is 12853979. The next prime is 12853991. The reversal of 12853980 is 8935821.

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

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35526 + ... + 35885.

It is an arithmetic number, because the mean of its divisors is an integer number (1083082).

Almost surely, 212853980 is an apocalyptic number.

12853980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12853980 is an abundant number, since it is smaller than the sum of its proper divisors (26136972).

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

12853980 is a wasteful number, since it uses less digits than its factorization.

12853980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71426 (or 71421 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 12853980 is about 3585.2447615191. The cubic root of 12853980 is about 234.2497880523.

The spelling of 12853980 in words is "twelve million, eight hundred fifty-three thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 71411 142822 214233 285644 357055 428466 642699 714110 856932 1071165 1285398 1428220 2142330 2570796 3213495 4284660 6426990 12853980