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75165740 = 22513289099
BaseRepresentation
bin1000111101011…
…11000000101100
312020102211000022
410132233000230
5123220300430
611243021312
71601620046
oct436570054
9166384008
1075165740
113947a151
122120a838
1312759b90
149da8a96
1568eb4e5
hex47af02c

75165740 has 24 divisors (see below), whose sum is σ = 169990800. Its totient is φ = 27753408.

The previous prime is 75165733. The next prime is 75165757. The reversal of 75165740 is 4756157.

It is a self number, because there is not a number n which added to its sum of digits gives 75165740.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144290 + ... + 144809.

It is an arithmetic number, because the mean of its divisors is an integer number (7082950).

Almost surely, 275165740 is an apocalyptic number.

It is an amenable number.

75165740 is an abundant number, since it is smaller than the sum of its proper divisors (94825060).

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

75165740 is a wasteful number, since it uses less digits than its factorization.

75165740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289121 (or 289119 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 75165740 is about 8669.8177604838. The cubic root of 75165740 is about 422.0267497250.

The spelling of 75165740 in words is "seventy-five million, one hundred sixty-five thousand, seven hundred forty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 289099 578198 1156396 1445495 2890990 3758287 5781980 7516574 15033148 18791435 37582870 75165740