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68280333 = 3112069101
BaseRepresentation
bin1000001000111…
…10000000001101
311202111000000020
410010132000031
5114434432313
610435252353
71456242012
oct404360015
9152430006
1068280333
11355a7030
121aa4a0b9
13111b8b84
1490d5709
155edb323
hex411e00d

68280333 has 8 divisors (see below), whose sum is σ = 99316896. Its totient is φ = 41382000.

The previous prime is 68280299. The next prime is 68280341. The reversal of 68280333 is 33308286.

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

It is not a de Polignac number, because 68280333 - 26 = 68280269 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 2069101 = 68280333 / (6 + 8 + 2 + 8 + 0 + 3 + 3 + 3).

It is a junction number, because it is equal to n+sod(n) for n = 68280294 and 68280303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68280733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1034518 + ... + 1034583.

It is an arithmetic number, because the mean of its divisors is an integer number (12414612).

Almost surely, 268280333 is an apocalyptic number.

It is an amenable number.

68280333 is a deficient number, since it is larger than the sum of its proper divisors (31036563).

68280333 is a wasteful number, since it uses less digits than its factorization.

68280333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069115.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 68280333 is about 8263.1914536697. The cubic root of 68280333 is about 408.7256346239.

The spelling of 68280333 in words is "sixty-eight million, two hundred eighty thousand, three hundred thirty-three".

Divisors: 1 3 11 33 2069101 6207303 22760111 68280333