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68207472 = 24322631801
BaseRepresentation
bin1000001000011…
…00001101110000
311202100022001200
410010030031300
5114430114342
610433531200
71455516414
oct404141560
9152308050
1068207472
1135557313
121aa13b00
1311191968
1490b6d44
155ec494c
hex410c370

68207472 has 60 divisors (see below), whose sum is σ = 191718384. Its totient is φ = 22636800.

The previous prime is 68207467. The next prime is 68207479. The reversal of 68207472 is 27470286.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68207479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36972 + ... + 38772.

Almost surely, 268207472 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 68207472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95859192).

68207472 is an abundant number, since it is smaller than the sum of its proper divisors (123510912).

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

68207472 is a wasteful number, since it uses less digits than its factorization.

68207472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078 (or 2069 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 68207472 is about 8258.7815081887. The cubic root of 68207472 is about 408.5802010556.

The spelling of 68207472 in words is "sixty-eight million, two hundred seven thousand, four hundred seventy-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 36 48 72 144 263 526 789 1052 1578 1801 2104 2367 3156 3602 4208 4734 5403 6312 7204 9468 10806 12624 14408 16209 18936 21612 28816 32418 37872 43224 64836 86448 129672 259344 473663 947326 1420989 1894652 2841978 3789304 4262967 5683956 7578608 8525934 11367912 17051868 22735824 34103736 68207472