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38091 = 312697
BaseRepresentation
bin1001010011001011
31221020210
421103023
52204331
6452203
7216024
oct112313
957223
1038091
1126689
121a063
1314451
14dc4b
15b446
hex94cb

38091 has 4 divisors (see below), whose sum is σ = 50792. Its totient is φ = 25392.

The previous prime is 38083. The next prime is 38113. The reversal of 38091 is 19083.

38091 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19083 = 36361.

It is not a de Polignac number, because 38091 - 23 = 38083 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (38011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6346 + ... + 6351.

It is an arithmetic number, because the mean of its divisors is an integer number (12698).

238091 is an apocalyptic number.

38091 is a deficient number, since it is larger than the sum of its proper divisors (12701).

38091 is a wasteful number, since it uses less digits than its factorization.

38091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12700.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 38091 is about 195.1691573994. The cubic root of 38091 is about 33.6465694953.

The spelling of 38091 in words is "thirty-eight thousand, ninety-one".

Divisors: 1 3 12697 38091