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1306868 = 221572081
BaseRepresentation
bin100111111000011110100
32110101200112
410333003310
5313304433
644002152
714052053
oct4770364
92411615
101306868
11812962
12530358
13369ac4
1426039a
151ac348
hex13f0f4

1306868 has 12 divisors (see below), whose sum is σ = 2302692. Its totient is φ = 648960.

The previous prime is 1306853. The next prime is 1306873. The reversal of 1306868 is 8686031.

It can be written as a sum of positive squares in 2 ways, for example, as 438244 + 868624 = 662^2 + 932^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413 + ... + 1668.

It is an arithmetic number, because the mean of its divisors is an integer number (191891).

21306868 is an apocalyptic number.

It is an amenable number.

1306868 is a deficient number, since it is larger than the sum of its proper divisors (995824).

1306868 is a wasteful number, since it uses less digits than its factorization.

1306868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242 (or 2240 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1306868 is about 1143.1832748951. The cubic root of 1306868 is about 109.3311479172.

The spelling of 1306868 in words is "one million, three hundred six thousand, eight hundred sixty-eight".

Divisors: 1 2 4 157 314 628 2081 4162 8324 326717 653434 1306868