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68152047 = 3831911433
BaseRepresentation
bin1000000111111…
…10101011101111
311202020111000220
410003332223233
5114421331142
610432422423
71455166005
oct403765357
9152214026
1068152047
1135519707
121a9a7a13
1311172672
1490a0a75
155eb32ec
hex40feaef

68152047 has 16 divisors (see below), whose sum is σ = 92510208. Its totient is φ = 44621120.

The previous prime is 68152037. The next prime is 68152057. The reversal of 68152047 is 74025186.

It is an interprime number because it is at equal distance from previous prime (68152037) and next prime (68152057).

It is a cyclic number.

It is not a de Polignac number, because 68152047 - 28 = 68151791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68151999 and 68152017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68152027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46843 + ... + 48275.

It is an arithmetic number, because the mean of its divisors is an integer number (5781888).

Almost surely, 268152047 is an apocalyptic number.

68152047 is a deficient number, since it is larger than the sum of its proper divisors (24358161).

68152047 is a wasteful number, since it uses less digits than its factorization.

68152047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 68152047 is about 8255.4253070329. The cubic root of 68152047 is about 408.4695010906.

The spelling of 68152047 in words is "sixty-eight million, one hundred fifty-two thousand, forty-seven".

Divisors: 1 3 83 191 249 573 1433 4299 15853 47559 118939 273703 356817 821109 22717349 68152047