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75830 = 257583
BaseRepresentation
bin10010100000110110
310212000112
4102200312
54411310
61343022
7434036
oct224066
9125015
1075830
1151a77
1237a72
1328691
141d8c6
1517705
hex12836

75830 has 8 divisors (see below), whose sum is σ = 136512. Its totient is φ = 30328.

The previous prime is 75821. The next prime is 75833. The reversal of 75830 is 3857.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 75796 and 75805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75833) by changing a digit.

75830 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3782 + ... + 3801.

It is an arithmetic number, because the mean of its divisors is an integer number (17064).

275830 is an apocalyptic number.

75830 is a deficient number, since it is larger than the sum of its proper divisors (60682).

75830 is a wasteful number, since it uses less digits than its factorization.

75830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7590.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 75830 is about 275.3724750225. The cubic root of 75830 is about 42.3266293694.

The spelling of 75830 in words is "seventy-five thousand, eight hundred thirty".

Divisors: 1 2 5 10 7583 15166 37915 75830