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13666248 = 2332347547
BaseRepresentation
bin110100001000…
…011111001000
3221201022120100
4310020133020
511444304443
61204525400
7224106201
oct64103710
927638510
1013666248
117794722
1246b0860
132aa654b
141b5a5a8
1512ee3d3
hexd087c8

13666248 has 48 divisors (see below), whose sum is σ = 37187280. Its totient is φ = 4533984.

The previous prime is 13666231. The next prime is 13666253. The reversal of 13666248 is 84266631.

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

It is a nude number because it is divisible by every one of its digits.

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, 24711 + ... + 25257.

It is an arithmetic number, because the mean of its divisors is an integer number (774735).

Almost surely, 213666248 is an apocalyptic number.

13666248 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13666248 is an abundant number, since it is smaller than the sum of its proper divisors (23521032).

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

13666248 is a wasteful number, since it uses less digits than its factorization.

13666248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906 (or 899 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 13666248 is about 3696.7888768497. The cubic root of 13666248 is about 239.0835885792.

The spelling of 13666248 in words is "thirteen million, six hundred sixty-six thousand, two hundred forty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 347 547 694 1041 1094 1388 1641 2082 2188 2776 3123 3282 4164 4376 4923 6246 6564 8328 9846 12492 13128 19692 24984 39384 189809 379618 569427 759236 1138854 1518472 1708281 2277708 3416562 4555416 6833124 13666248