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76385 = 515277
BaseRepresentation
bin10010101001100001
310212210002
4102221201
54421020
61345345
7435461
oct225141
9125702
1076385
1152431
1238255
13289ca
141dba1
1517975
hex12a61

76385 has 4 divisors (see below), whose sum is σ = 91668. Its totient is φ = 61104.

The previous prime is 76379. The next prime is 76387. The reversal of 76385 is 58367.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15376 + 61009 = 124^2 + 247^2 .

It is a cyclic number.

It is not a de Polignac number, because 76385 - 24 = 76369 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76387) by changing a digit.

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, 7634 + ... + 7643.

It is an arithmetic number, because the mean of its divisors is an integer number (22917).

276385 is an apocalyptic number.

It is an amenable number.

76385 is a deficient number, since it is larger than the sum of its proper divisors (15283).

76385 is a wasteful number, since it uses less digits than its factorization.

76385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15282.

The product of its digits is 5040, while the sum is 29.

The square root of 76385 is about 276.3783638420. The cubic root of 76385 is about 42.4296413712.

It can be divided in two parts, 763 and 85, that added together give a palindrome (848).

The spelling of 76385 in words is "seventy-six thousand, three hundred eighty-five".

Divisors: 1 5 15277 76385