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68073400 = 23521073181
BaseRepresentation
bin1000000111010…
…11011110111000
311202002111011001
410003223132320
5114411322100
610431014344
71454420503
oct403533670
9152074131
1068073400
113547560a
121a96a3b4
1311145925
14908013a
155e99d6a
hex40eb7b8

68073400 has 48 divisors (see below), whose sum is σ = 159800040. Its totient is φ = 26966400.

The previous prime is 68073391. The next prime is 68073413. The reversal of 68073400 is 437086.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19810 + ... + 22990.

Almost surely, 268073400 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 68073400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79900020).

68073400 is an abundant number, since it is smaller than the sum of its proper divisors (91726640).

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

68073400 is a wasteful number, since it uses less digits than its factorization.

68073400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3304 (or 3295 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 68073400 is about 8250.6605796142. The cubic root of 68073400 is about 408.3123169340.

The spelling of 68073400 in words is "sixty-eight million, seventy-three thousand, four hundred".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 107 200 214 428 535 856 1070 2140 2675 3181 4280 5350 6362 10700 12724 15905 21400 25448 31810 63620 79525 127240 159050 318100 340367 636200 680734 1361468 1701835 2722936 3403670 6807340 8509175 13614680 17018350 34036700 68073400