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68231433 = 3227100193
BaseRepresentation
bin1000001000100…
…10000100001001
311202101111221010
410010102010021
5114431401213
610434234133
71455646314
oct404220411
9152344833
1068231433
1135573316
121aa25949
131119c83a
1490c197b
155ecbac3
hex4112109

68231433 has 8 divisors (see below), whose sum is σ = 91376928. Its totient is φ = 45286784.

The previous prime is 68231419. The next prime is 68231437. The reversal of 68231433 is 33413286.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68231433 - 24 = 68231417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68231433.

It is not an unprimeable number, because it can be changed into a prime (68231437) by changing a digit.

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, 49416 + ... + 50777.

It is an arithmetic number, because the mean of its divisors is an integer number (11422116).

Almost surely, 268231433 is an apocalyptic number.

It is an amenable number.

68231433 is a deficient number, since it is larger than the sum of its proper divisors (23145495).

68231433 is a wasteful number, since it uses less digits than its factorization.

68231433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100423.

The product of its digits is 10368, while the sum is 30.

The square root of 68231433 is about 8260.2320185331. The cubic root of 68231433 is about 408.6280396269.

It can be divided in two parts, 6823 and 1433, that added together give a triangular number (8256 = T128).

The spelling of 68231433 in words is "sixty-eight million, two hundred thirty-one thousand, four hundred thirty-three".

Divisors: 1 3 227 681 100193 300579 22743811 68231433