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523780068 = 2237193071069
BaseRepresentation
bin11111001110000…
…011111111100100
31100111120210011210
4133032003333210
52033041430233
6123550231420
715660025410
oct3716037744
91314523153
10523780068
11249729799
121274b5570
138468cc46
144d7c5d40
1530eb4163
hex1f383fe4

523780068 has 96 divisors (see below), whose sum is σ = 1476428800. Its totient is φ = 141181056.

The previous prime is 523780009. The next prime is 523780069. The reversal of 523780068 is 860087325.

It is not an unprimeable number, because it can be changed into a prime (523780069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 489438 + ... + 490506.

Almost surely, 2523780068 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 523780068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (738214400).

523780068 is an abundant number, since it is smaller than the sum of its proper divisors (952648732).

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

523780068 is a wasteful number, since it uses less digits than its factorization.

523780068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409 (or 1407 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 523780068 is about 22886.2418933297. The cubic root of 523780068 is about 806.0889897577.

The spelling of 523780068 in words is "five hundred twenty-three million, seven hundred eighty thousand, sixty-eight".

Divisors: 1 2 3 4 6 7 12 14 19 21 28 38 42 57 76 84 114 133 228 266 307 399 532 614 798 921 1069 1228 1596 1842 2138 2149 3207 3684 4276 4298 5833 6414 6447 7483 8596 11666 12828 12894 14966 17499 20311 22449 23332 25788 29932 34998 40622 40831 44898 60933 69996 81244 81662 89796 121866 122493 142177 163324 243732 244986 284354 328183 426531 489972 568708 656366 853062 984549 1312732 1706124 1969098 2297281 3938196 4594562 6235477 6891843 9189124 12470954 13783686 18706431 24941908 27567372 37412862 43648339 74825724 87296678 130945017 174593356 261890034 523780068