Search a number
-
+
8181068 = 227292181
BaseRepresentation
bin11111001101010101001100
3120101122022112
4133031111030
54043243233
6451203152
7126352340
oct37152514
916348275
108181068
114688615
1228a64b8
13190598c
14112d620
15ab9048
hex7cd54c

8181068 has 12 divisors (see below), whose sum is σ = 16362192. Its totient is φ = 3506160.

The previous prime is 8181053. The next prime is 8181071. The reversal of 8181068 is 8601818.

It is a happy number.

8181068 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146063 + ... + 146118.

It is an arithmetic number, because the mean of its divisors is an integer number (1363516).

Almost surely, 28181068 is an apocalyptic number.

It is an amenable number.

8181068 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8181068 is a wasteful number, since it uses less digits than its factorization.

8181068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292192 (or 292190 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 32.

The square root of 8181068 is about 2860.2566318427. The cubic root of 8181068 is about 201.4976571223.

The spelling of 8181068 in words is "eight million, one hundred eighty-one thousand, sixty-eight".

Divisors: 1 2 4 7 14 28 292181 584362 1168724 2045267 4090534 8181068