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2690285 = 51341389
BaseRepresentation
bin1010010000110011101101
312001200101012
422100303231
51142042120
6133355005
731603253
oct12206355
95050335
102690285
111578284
12a98a65
137326b0
145005d3
153821c5
hex290ced

2690285 has 8 divisors (see below), whose sum is σ = 3476760. Its totient is φ = 1986624.

The previous prime is 2690263. The next prime is 2690293. The reversal of 2690285 is 5820962.

2690285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 139876 + 2550409 = 374^2 + 1597^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2690285 - 210 = 2689261 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20630 + ... + 20759.

It is an arithmetic number, because the mean of its divisors is an integer number (434595).

22690285 is an apocalyptic number.

It is an amenable number.

2690285 is a deficient number, since it is larger than the sum of its proper divisors (786475).

2690285 is a wasteful number, since it uses less digits than its factorization.

2690285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41407.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 2690285 is about 1640.2088281679. The cubic root of 2690285 is about 139.0804530539.

The spelling of 2690285 in words is "two million, six hundred ninety thousand, two hundred eighty-five".

Divisors: 1 5 13 65 41389 206945 538057 2690285