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68383404 = 223212714957
BaseRepresentation
bin1000001001101…
…11001010101100
311202200020101200
410010313022230
5120001232104
610441405500
71460151345
oct404671254
9152606350
1068383404
1135667511
121aa99890
1311223a6b
1491210cc
15600bb39
hex41372ac

68383404 has 36 divisors (see below), whose sum is σ = 174230784. Its totient is φ = 22613472.

The previous prime is 68383361. The next prime is 68383423. The reversal of 68383404 is 40438386.

It is a tau number, because it is divible by the number of its divisors (36).

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

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, 2907 + ... + 12050.

It is an arithmetic number, because the mean of its divisors is an integer number (4839744).

Almost surely, 268383404 is an apocalyptic number.

It is an amenable number.

68383404 is an abundant number, since it is smaller than the sum of its proper divisors (105847380).

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

68383404 is a wasteful number, since it uses less digits than its factorization.

68383404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15094 (or 15089 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 68383404 is about 8269.4258567327. The cubic root of 68383404 is about 408.9311920083.

The spelling of 68383404 in words is "sixty-eight million, three hundred eighty-three thousand, four hundred four".

Divisors: 1 2 3 4 6 9 12 18 36 127 254 381 508 762 1143 1524 2286 4572 14957 29914 44871 59828 89742 134613 179484 269226 538452 1899539 3799078 5698617 7598156 11397234 17095851 22794468 34191702 68383404