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123824768 = 27979973
BaseRepresentation
bin1110110000101…
…10101010000000
322121222221122112
413120112222000
5223144343033
620141554452
73032331104
oct730265200
9277887575
10123824768
1163994421
1235575a28
131c865ac2
1412633904
15ad0dc48
hex7616a80

123824768 has 32 divisors (see below), whose sum is σ = 249250260. Its totient is φ = 61267968.

The previous prime is 123824759. The next prime is 123824773. The reversal of 123824768 is 867428321.

It can be written as a sum of positive squares in 2 ways, for example, as 116812864 + 7011904 = 10808^2 + 2648^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7430 + ... + 17402.

Almost surely, 2123824768 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 123824768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124625130).

123824768 is an abundant number, since it is smaller than the sum of its proper divisors (125425492).

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

123824768 is an frugal number, since it uses more digits than its factorization.

123824768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10084 (or 10072 counting only the distinct ones).

The product of its digits is 129024, while the sum is 41.

The square root of 123824768 is about 11127.6577948821. The cubic root of 123824768 is about 498.4280873600.

The spelling of 123824768 in words is "one hundred twenty-three million, eight hundred twenty-four thousand, seven hundred sixty-eight".

Divisors: 1 2 4 8 16 32 64 97 128 194 388 776 1552 3104 6208 9973 12416 19946 39892 79784 159568 319136 638272 967381 1276544 1934762 3869524 7739048 15478096 30956192 61912384 123824768