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68206974 = 2311293949
BaseRepresentation
bin1000001000011…
…00000101111110
311202100021101020
410010030011332
5114430110344
610433525010
71455515103
oct404140576
9152307336
1068206974
1135556a00
121aa13766
1311191674
1490b6aaa
155ec4719
hex410c17e

68206974 has 24 divisors (see below), whose sum is σ = 149944200. Its totient is φ = 20668560.

The previous prime is 68206973. The next prime is 68206981. The reversal of 68206974 is 47960286.

68206974 = T1124 + T1125 + ... + T1222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68206973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46249 + ... + 47700.

It is an arithmetic number, because the mean of its divisors is an integer number (6247675).

Almost surely, 268206974 is an apocalyptic number.

68206974 is an abundant number, since it is smaller than the sum of its proper divisors (81737226).

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

68206974 is a wasteful number, since it uses less digits than its factorization.

68206974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93976 (or 93965 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 68206974 is about 8258.7513584076. The cubic root of 68206974 is about 408.5792066707.

The spelling of 68206974 in words is "sixty-eight million, two hundred six thousand, nine hundred seventy-four".

Divisors: 1 2 3 6 11 22 33 66 121 242 363 726 93949 187898 281847 563694 1033439 2066878 3100317 6200634 11367829 22735658 34103487 68206974