Search a number
-
+
81826 = 2163251
BaseRepresentation
bin10011111110100010
311011020121
4103332202
510104301
61430454
7460363
oct237642
9134217
1081826
1156528
123b42a
132b324
1421b6a
15193a1
hex13fa2

81826 has 8 divisors (see below), whose sum is σ = 123984. Its totient is φ = 40500.

The previous prime is 81817. The next prime is 81839. The reversal of 81826 is 62818.

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

It is a self number, because there is not a number n which added to its sum of digits gives 81826.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201 + ... + 451.

It is an arithmetic number, because the mean of its divisors is an integer number (15498).

281826 is an apocalyptic number.

81826 is a deficient number, since it is larger than the sum of its proper divisors (42158).

81826 is a wasteful number, since it uses less digits than its factorization.

81826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416.

The product of its digits is 768, while the sum is 25.

The square root of 81826 is about 286.0524427443. The cubic root of 81826 is about 43.4140638374.

The spelling of 81826 in words is "eighty-one thousand, eight hundred twenty-six".

Divisors: 1 2 163 251 326 502 40913 81826