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12660480 = 283257157
BaseRepresentation
bin110000010010…
…111100000000
3212211012220200
4300102330000
511220113410
61131205200
7212420010
oct60227400
925735820
1012660480
117168008
1242a6800
132813811
141977c40
1511a13c0
hexc12f00

12660480 has 216 divisors, whose sum is σ = 50380512. Its totient is φ = 2875392.

The previous prime is 12660467. The next prime is 12660523. The reversal of 12660480 is 8406621.

12660480 is a `hidden beast` number, since 126 + 60 + 480 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80562 + ... + 80718.

Almost surely, 212660480 is an apocalyptic number.

12660480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12660480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25190256).

12660480 is an abundant number, since it is smaller than the sum of its proper divisors (37720032).

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

12660480 is a wasteful number, since it uses less digits than its factorization.

12660480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 12660480 is about 3558.1568262234. The cubic root of 12660480 is about 233.0683977085.

It can be divided in two parts, 126 and 60480, that added together give a palindrome (60606).

The spelling of 12660480 in words is "twelve million, six hundred sixty thousand, four hundred eighty".