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75689960 = 2351892249
BaseRepresentation
bin1001000001011…
…10111111101000
312021102110002212
410200232333220
5123334034320
611302144252
71606232303
oct440567750
9167373085
1075689960
11397a7a95
1221422088
13128b1678
14a0a3b3a
1569a19c5
hex482efe8

75689960 has 16 divisors (see below), whose sum is σ = 170302500. Its totient is φ = 30275968.

The previous prime is 75689947. The next prime is 75689963. The reversal of 75689960 is 6998657.

It can be written as a sum of positive squares in 2 ways, for example, as 72148036 + 3541924 = 8494^2 + 1882^2 .

It is a junction number, because it is equal to n+sod(n) for n = 75689899 and 75689908.

It is not an unprimeable number, because it can be changed into a prime (75689963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 946085 + ... + 946164.

Almost surely, 275689960 is an apocalyptic number.

It is an amenable number.

75689960 is an abundant number, since it is smaller than the sum of its proper divisors (94612540).

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

75689960 is a wasteful number, since it uses less digits than its factorization.

75689960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892260 (or 1892256 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 75689960 is about 8699.9977011491. The cubic root of 75689960 is about 423.0055756949.

The spelling of 75689960 in words is "seventy-five million, six hundred eighty-nine thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 1892249 3784498 7568996 9461245 15137992 18922490 37844980 75689960