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12857148 = 22321918797
BaseRepresentation
bin110001000010…
…111100111100
3220012012200200
4301002330330
511242412043
61135323500
7214166253
oct61027474
926165620
1012857148
117291847
124380590
1328821a5
1419c979a
1511de7d3
hexc42f3c

12857148 has 36 divisors (see below), whose sum is σ = 34212360. Its totient is φ = 4059936.

The previous prime is 12857147. The next prime is 12857209. The reversal of 12857148 is 84175821.

12857148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not an unprimeable number, because it can be changed into a prime (12857147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8715 + ... + 10082.

Almost surely, 212857148 is an apocalyptic number.

12857148 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12857148 is an abundant number, since it is smaller than the sum of its proper divisors (21355212).

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

12857148 is a wasteful number, since it uses less digits than its factorization.

12857148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18826 (or 18821 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 12857148 is about 3585.6865451403. The cubic root of 12857148 is about 234.2690309216.

The spelling of 12857148 in words is "twelve million, eight hundred fifty-seven thousand, one hundred forty-eight".

Divisors: 1 2 3 4 6 9 12 18 19 36 38 57 76 114 171 228 342 684 18797 37594 56391 75188 112782 169173 225564 338346 357143 676692 714286 1071429 1428572 2142858 3214287 4285716 6428574 12857148