Search a number
-
+
381277 = 13139211
BaseRepresentation
bin1011101000101011101
3201101000101
41131011131
544200102
612101101
73145411
oct1350535
9641011
10381277
11240506
12164791
13104710
149cd41
1577e87
hex5d15d

381277 has 8 divisors (see below), whose sum is σ = 415520. Its totient is φ = 347760.

The previous prime is 381253. The next prime is 381287. The reversal of 381277 is 772183.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-381277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381287) 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 7 ways as a sum of consecutive naturals, for example, 1702 + ... + 1912.

It is an arithmetic number, because the mean of its divisors is an integer number (51940).

2381277 is an apocalyptic number.

381277 is the 357-th hex number.

It is an amenable number.

381277 is a deficient number, since it is larger than the sum of its proper divisors (34243).

381277 is a wasteful number, since it uses less digits than its factorization.

381277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363.

The product of its digits is 2352, while the sum is 28.

The square root of 381277 is about 617.4763153353. The cubic root of 381277 is about 72.5126097766.

The spelling of 381277 in words is "three hundred eighty-one thousand, two hundred seventy-seven".

Divisors: 1 13 139 211 1807 2743 29329 381277