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75680288 = 252365009
BaseRepresentation
bin1001000001011…
…00101000100000
312021101221211122
410200230220200
5123333232123
611302031412
71606162145
oct440545040
9167357748
1075680288
11397a07a2
1221418568
13128aa148
14a0a03cc
15699dbc8
hex482ca20

75680288 has 12 divisors (see below), whose sum is σ = 148995630. Its totient is φ = 37840128.

The previous prime is 75680279. The next prime is 75680291. The reversal of 75680288 is 88208657.

It can be written as a sum of positive squares in only one way, i.e., 73753744 + 1926544 = 8588^2 + 1388^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1182473 + ... + 1182536.

Almost surely, 275680288 is an apocalyptic number.

It is an amenable number.

75680288 is a deficient number, since it is larger than the sum of its proper divisors (73315342).

75680288 is a wasteful number, since it uses less digits than its factorization.

75680288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2365019 (or 2365011 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 75680288 is about 8699.4418211745. The cubic root of 75680288 is about 422.9875570823.

The spelling of 75680288 in words is "seventy-five million, six hundred eighty thousand, two hundred eighty-eight".

Divisors: 1 2 4 8 16 32 2365009 4730018 9460036 18920072 37840144 75680288