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6861340 = 225349983
BaseRepresentation
bin11010001011001000011100
3110220120222201
4122023020130
53224030330
6403021244
7112214623
oct32131034
913816881
106861340
113967032
12236a824
131563085
14ca86ba
15907eca
hex68b21c

6861340 has 24 divisors (see below), whose sum is σ = 14464800. Its totient is φ = 2733888.

The previous prime is 6861331. The next prime is 6861367. The reversal of 6861340 is 431686.

It is a junction number, because it is equal to n+sod(n) for n = 6861299 and 6861308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6489 + ... + 7471.

It is an arithmetic number, because the mean of its divisors is an integer number (602700).

Almost surely, 26861340 is an apocalyptic number.

It is an amenable number.

6861340 is an abundant number, since it is smaller than the sum of its proper divisors (7603460).

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

6861340 is a wasteful number, since it uses less digits than its factorization.

6861340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341 (or 1339 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 6861340 is about 2619.4159654396. The cubic root of 6861340 is about 190.0216041916.

The spelling of 6861340 in words is "six million, eight hundred sixty-one thousand, three hundred forty".

Divisors: 1 2 4 5 10 20 349 698 983 1396 1745 1966 3490 3932 4915 6980 9830 19660 343067 686134 1372268 1715335 3430670 6861340