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380769 = 3126923
BaseRepresentation
bin1011100111101100001
3201100022120
41130331201
544141034
612054453
73144054
oct1347541
9640276
10380769
11240094
12164429
1310440c
149ca9b
1577c49
hex5cf61

380769 has 4 divisors (see below), whose sum is σ = 507696. Its totient is φ = 253844.

The previous prime is 380753. The next prime is 380777. The reversal of 380769 is 967083.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 380769 - 24 = 380753 is a prime.

It is a super-2 number, since 2×3807692 = 289970062722, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (380729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63459 + ... + 63464.

It is an arithmetic number, because the mean of its divisors is an integer number (126924).

2380769 is an apocalyptic number.

It is an amenable number.

380769 is a deficient number, since it is larger than the sum of its proper divisors (126927).

380769 is a wasteful number, since it uses less digits than its factorization.

380769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126926.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 380769 is about 617.0648264162. The cubic root of 380769 is about 72.4803910504.

The spelling of 380769 in words is "three hundred eighty thousand, seven hundred sixty-nine".

Divisors: 1 3 126923 380769