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3087149 = 131761229
BaseRepresentation
bin1011110001101100101101
312210211202212
423301230231
51242242044
6150100205
735145302
oct13615455
95724685
103087149
11181946a
12104a665
13841220
145a50a9
1540ea9e
hex2f1b2d

3087149 has 16 divisors (see below), whose sum is σ = 3593520. Its totient is φ = 2626560.

The previous prime is 3087113. The next prime is 3087167. The reversal of 3087149 is 9417803.

3087149 = 3322 + 3332 + ... + 3572.

It can be written as a sum of positive squares in 8 ways, for example, as 24649 + 3062500 = 157^2 + 1750^2 .

It is a cyclic number.

It is not a de Polignac number, because 3087149 - 220 = 2038573 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3087109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13367 + ... + 13595.

It is an arithmetic number, because the mean of its divisors is an integer number (224595).

Almost surely, 23087149 is an apocalyptic number.

It is an amenable number.

3087149 is a deficient number, since it is larger than the sum of its proper divisors (506371).

3087149 is a wasteful number, since it uses less digits than its factorization.

3087149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 3087149 is about 1757.0284573677. The cubic root of 3087149 is about 145.6082102251.

The spelling of 3087149 in words is "three million, eighty-seven thousand, one hundred forty-nine".

Divisors: 1 13 17 61 221 229 793 1037 2977 3893 13481 13969 50609 181597 237473 3087149