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568135680 = 2123571321
BaseRepresentation
bin100001110111010…
…001000000000000
31110121001021122020
4201313101000000
52130420320210
6132213041440
720036034150
oct4167210000
91417037566
10568135680
11271774822
1213a326280
1390920178
1455650760
1534d26770
hex21dd1000

568135680 has 208 divisors, whose sum is σ = 2079072384. Its totient is φ = 129761280.

The previous prime is 568135669. The next prime is 568135691. The reversal of 568135680 is 86531865.

It is an interprime number because it is at equal distance from previous prime (568135669) and next prime (568135691).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 429420 + ... + 430740.

Almost surely, 2568135680 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 568135680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1039536192).

568135680 is an abundant number, since it is smaller than the sum of its proper divisors (1510936704).

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

568135680 is a wasteful number, since it uses less digits than its factorization.

568135680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360 (or 1338 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 568135680 is about 23835.5969088253. The cubic root of 568135680 is about 828.2294866713.

The spelling of 568135680 in words is "five hundred sixty-eight million, one hundred thirty-five thousand, six hundred eighty".