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68633104 = 2423421443
BaseRepresentation
bin1000001011101…
…00001000010000
311210010220220211
410011310020100
5120032224404
610451013504
71462241341
oct405641020
9153126824
1068633104
1135818081
121ab9a294
13112b0607
1491880c8
15605ab04
hex4174210

68633104 has 40 divisors (see below), whose sum is σ = 139401792. Its totient is φ = 32672640.

The previous prime is 68633099. The next prime is 68633129. The reversal of 68633104 is 40133686.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154707 + ... + 155149.

Almost surely, 268633104 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 68633104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69700896).

68633104 is an abundant number, since it is smaller than the sum of its proper divisors (70768688).

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

68633104 is a wasteful number, since it uses less digits than its factorization.

68633104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895 (or 889 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 68633104 is about 8284.5098829080. The cubic root of 68633104 is about 409.4283208444.

The spelling of 68633104 in words is "sixty-eight million, six hundred thirty-three thousand, one hundred four".

Divisors: 1 2 4 8 16 23 46 92 184 368 421 443 842 886 1684 1772 3368 3544 6736 7088 9683 10189 19366 20378 38732 40756 77464 81512 154928 163024 186503 373006 746012 1492024 2984048 4289569 8579138 17158276 34316552 68633104