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8181282 = 231363547
BaseRepresentation
bin11111001101011000100010
3120101122121110
4133031120202
54043300112
6451204150
7126353064
oct37153042
916348543
108181282
11468879a
1228a6656
131905ac5
14112d734
15ab913c
hex7cd622

8181282 has 8 divisors (see below), whose sum is σ = 16362576. Its totient is φ = 2727092.

The previous prime is 8181281. The next prime is 8181287. The reversal of 8181282 is 2821818.

8181282 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

8181282 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (8181281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 681768 + ... + 681779.

It is an arithmetic number, because the mean of its divisors is an integer number (2045322).

Almost surely, 28181282 is an apocalyptic number.

8181282 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

8181282 is a wasteful number, since it uses less digits than its factorization.

8181282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363552.

The product of its digits is 2048, while the sum is 30.

The square root of 8181282 is about 2860.2940408287. The cubic root of 8181282 is about 201.4994140291.

The spelling of 8181282 in words is "eight million, one hundred eighty-one thousand, two hundred eighty-two".

Divisors: 1 2 3 6 1363547 2727094 4090641 8181282