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2687090 = 257231669
BaseRepresentation
bin1010010000000001110010
312001111222212
422100001302
51141441330
6133332122
731561040
oct12200162
95044885
102687090
11157593a
12a97042
137310c3
144dd390
15381295
hex290072

2687090 has 32 divisors (see below), whose sum is σ = 5771520. Its totient is φ = 880704.

The previous prime is 2687081. The next prime is 2687093. The reversal of 2687090 is 907862.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2687093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 776 + ... + 2444.

It is an arithmetic number, because the mean of its divisors is an integer number (180360).

22687090 is an apocalyptic number.

2687090 is an abundant number, since it is smaller than the sum of its proper divisors (3084430).

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

2687090 is a wasteful number, since it uses less digits than its factorization.

2687090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706.

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

The square root of 2687090 is about 1639.2345774782. The cubic root of 2687090 is about 139.0253736265.

The spelling of 2687090 in words is "two million, six hundred eighty-seven thousand, ninety".

Divisors: 1 2 5 7 10 14 23 35 46 70 115 161 230 322 805 1610 1669 3338 8345 11683 16690 23366 38387 58415 76774 116830 191935 268709 383870 537418 1343545 2687090