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38887 = 371051
BaseRepresentation
bin1001011111100111
31222100021
421133213
52221022
6500011
7221242
oct113747
958307
1038887
1127242
121a607
1314914
1410259
15b7c7
hex97e7

38887 has 4 divisors (see below), whose sum is σ = 39976. Its totient is φ = 37800.

The previous prime is 38873. The next prime is 38891. The reversal of 38887 is 78883.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-38887 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 (38867) 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, 489 + ... + 562.

It is an arithmetic number, because the mean of its divisors is an integer number (9994).

238887 is an apocalyptic number.

38887 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

38887 is a deficient number, since it is larger than the sum of its proper divisors (1089).

38887 is a wasteful number, since it uses less digits than its factorization.

38887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088.

The product of its digits is 10752, while the sum is 34.

The square root of 38887 is about 197.1978701711. The cubic root of 38887 is about 33.8793300202.

The spelling of 38887 in words is "thirty-eight thousand, eight hundred eighty-seven".

Divisors: 1 37 1051 38887