Search a number
-
+
8131146 = 231355191
BaseRepresentation
bin11111000001001001001010
3120022002211120
4133001021022
54040144041
6450140110
7126053652
oct37011112
916262746
108131146
114654061
122881636
1318b903a
141119362
15aa9366
hex7c124a

8131146 has 8 divisors (see below), whose sum is σ = 16262304. Its totient is φ = 2710380.

The previous prime is 8131139. The next prime is 8131147. The reversal of 8131146 is 6411318.

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

8131146 is an admirable number.

It is a super-2 number, since 2×81311462 = 132231070546632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8131147) 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, 677590 + ... + 677601.

It is an arithmetic number, because the mean of its divisors is an integer number (2032788).

Almost surely, 28131146 is an apocalyptic number.

8131146 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.

8131146 is a wasteful number, since it uses less digits than its factorization.

8131146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355196.

The product of its digits is 576, while the sum is 24.

The square root of 8131146 is about 2851.5164386691. The cubic root of 8131146 is about 201.0869651650.

The spelling of 8131146 in words is "eight million, one hundred thirty-one thousand, one hundred forty-six".

Divisors: 1 2 3 6 1355191 2710382 4065573 8131146