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381995 = 5194021
BaseRepresentation
bin1011101010000101011
3201101222222
41131100223
544210440
612104255
73150455
oct1352053
9641888
10381995
11240aa9
1216508b
13104b43
149d2d5
15782b5
hex5d42b

381995 has 8 divisors (see below), whose sum is σ = 482640. Its totient is φ = 289440.

The previous prime is 381991. The next prime is 382001. The reversal of 381995 is 599183.

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

It is not a de Polignac number, because 381995 - 22 = 381991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (381991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1916 + ... + 2105.

It is an arithmetic number, because the mean of its divisors is an integer number (60330).

2381995 is an apocalyptic number.

381995 is a deficient number, since it is larger than the sum of its proper divisors (100645).

381995 is a wasteful number, since it uses less digits than its factorization.

381995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4045.

The product of its digits is 9720, while the sum is 35.

The square root of 381995 is about 618.0574406963. The cubic root of 381995 is about 72.5580984952.

The spelling of 381995 in words is "three hundred eighty-one thousand, nine hundred ninety-five".

Divisors: 1 5 19 95 4021 20105 76399 381995