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68972253 = 372835653
BaseRepresentation
bin1000001110001…
…10111011011101
311210210011010220
410013012323131
5120124103003
610502151553
71465153200
oct407067335
9153704126
1068972253
1135a29969
121b1225b9
131139baac
149235937
1560c6353
hex41c6edd

68972253 has 24 divisors (see below), whose sum is σ = 108285408. Its totient is φ = 38930976.

The previous prime is 68972251. The next prime is 68972263. The reversal of 68972253 is 35227986.

It is not a de Polignac number, because 68972253 - 21 = 68972251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68972251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9375 + ... + 15027.

It is an arithmetic number, because the mean of its divisors is an integer number (4511892).

Almost surely, 268972253 is an apocalyptic number.

It is an amenable number.

68972253 is a deficient number, since it is larger than the sum of its proper divisors (39313155).

68972253 is a wasteful number, since it uses less digits than its factorization.

68972253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5753 (or 5746 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 68972253 is about 8304.9535218447. The cubic root of 68972253 is about 410.1016067827.

The spelling of 68972253 in words is "sixty-eight million, nine hundred seventy-two thousand, two hundred fifty-three".

Divisors: 1 3 7 21 49 83 147 249 581 1743 4067 5653 12201 16959 39571 118713 276997 469199 830991 1407597 3284393 9853179 22990751 68972253