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6315040 = 255291361
BaseRepresentation
bin11000000101110000100000
3102212211121101
4120011300200
53104040130
6343204144
7104451124
oct30056040
912784541
106315040
113623646
122146654
131401514
14ba5584
1584b1ca
hex605c20

6315040 has 48 divisors (see below), whose sum is σ = 15445080. Its totient is φ = 2437120.

The previous prime is 6315037. The next prime is 6315059. The reversal of 6315040 is 405136.

It can be written as a sum of positive squares in 4 ways, for example, as 4112784 + 2202256 = 2028^2 + 1484^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6314999 and 6315017.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3960 + ... + 5320.

Almost surely, 26315040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6315040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7722540).

6315040 is an abundant number, since it is smaller than the sum of its proper divisors (9130040).

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

6315040 is a wasteful number, since it uses less digits than its factorization.

6315040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405 (or 1397 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 6315040 is about 2512.9743333349. The cubic root of 6315040 is about 184.8383296618.

It can be divided in two parts, 63150 and 40, that added together give a triangular number (63190 = T355).

The spelling of 6315040 in words is "six million, three hundred fifteen thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 29 32 40 58 80 116 145 160 232 290 464 580 928 1160 1361 2320 2722 4640 5444 6805 10888 13610 21776 27220 39469 43552 54440 78938 108880 157876 197345 217760 315752 394690 631504 789380 1263008 1578760 3157520 6315040