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68147148 = 223192571163
BaseRepresentation
bin1000000111111…
…01011111001100
311202020020022110
410003331133030
5114421202043
610432344020
71455145506
oct403753714
9152206273
1068147148
1135515a63
121a9a5010
1311170374
14909cd76
155eb1b33
hex40fd7cc

68147148 has 48 divisors (see below), whose sum is σ = 168174720. Its totient is φ = 21417984.

The previous prime is 68147147. The next prime is 68147159. The reversal of 68147148 is 84174186.

It is not an unprimeable number, because it can be changed into a prime (68147147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58015 + ... + 59177.

It is an arithmetic number, because the mean of its divisors is an integer number (3503640).

Almost surely, 268147148 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 68147148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84087360).

68147148 is an abundant number, since it is smaller than the sum of its proper divisors (100027572).

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

68147148 is a wasteful number, since it uses less digits than its factorization.

68147148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446 (or 1444 counting only the distinct ones).

The product of its digits is 43008, while the sum is 39.

The square root of 68147148 is about 8255.1285877326. The cubic root of 68147148 is about 408.4597134656.

The spelling of 68147148 in words is "sixty-eight million, one hundred forty-seven thousand, one hundred forty-eight".

Divisors: 1 2 3 4 6 12 19 38 57 76 114 228 257 514 771 1028 1163 1542 2326 3084 3489 4652 4883 6978 9766 13956 14649 19532 22097 29298 44194 58596 66291 88388 132582 265164 298891 597782 896673 1195564 1793346 3586692 5678929 11357858 17036787 22715716 34073574 68147148