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78871 = 136067
BaseRepresentation
bin10011010000010111
311000012011
4103100113
510010441
61405051
7445642
oct232027
9130164
1078871
1154291
1239787
1329b90
1420a59
1518581
hex13417

78871 has 4 divisors (see below), whose sum is σ = 84952. Its totient is φ = 72792.

The previous prime is 78857. The next prime is 78877. The reversal of 78871 is 17887.

78871 is nontrivially palindromic in base 15.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17887 = 31577.

It is a cyclic number.

It is not a de Polignac number, because 78871 - 25 = 78839 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 (78877) 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, 3021 + ... + 3046.

It is an arithmetic number, because the mean of its divisors is an integer number (21238).

278871 is an apocalyptic number.

78871 is a deficient number, since it is larger than the sum of its proper divisors (6081).

78871 is a wasteful number, since it uses less digits than its factorization.

78871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6080.

The product of its digits is 3136, while the sum is 31.

The square root of 78871 is about 280.8398119925. The cubic root of 78871 is about 42.8850363390.

It can be divided in two parts, 78 and 871, that added together give a palindrome (949).

The spelling of 78871 in words is "seventy-eight thousand, eight hundred seventy-one".

Divisors: 1 13 6067 78871