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68743064 = 23131921831
BaseRepresentation
bin1000001100011…
…10111110011000
311210100111202102
410012032332120
5120044234224
610453222532
71463210045
oct406167630
9153314672
1068743064
1135892755
121b031a48
131131b690
1491b61cc
15607d4ae
hex418ef98

68743064 has 48 divisors (see below), whose sum is σ = 146578320. Its totient is φ = 30041280.

The previous prime is 68743061. The next prime is 68743069. The reversal of 68743064 is 46034786.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68743061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36629 + ... + 38459.

It is an arithmetic number, because the mean of its divisors is an integer number (3053715).

Almost surely, 268743064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68743064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73289160).

68743064 is an abundant number, since it is smaller than the sum of its proper divisors (77835256).

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

68743064 is a wasteful number, since it uses less digits than its factorization.

68743064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888 (or 1865 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 38.

The square root of 68743064 is about 8291.1437088016. The cubic root of 68743064 is about 409.6468583223.

The spelling of 68743064 in words is "sixty-eight million, seven hundred forty-three thousand, sixty-four".

Divisors: 1 2 4 8 13 19 26 38 52 76 104 152 247 361 494 722 988 1444 1831 1976 2888 3662 4693 7324 9386 14648 18772 23803 34789 37544 47606 69578 95212 139156 190424 278312 452257 660991 904514 1321982 1809028 2643964 3618056 5287928 8592883 17185766 34371532 68743064