Search a number
-
+
2831148 = 223278643
BaseRepresentation
bin1010110011001100101100
312022211121100
422303030230
51211044043
6140403100
733031035
oct12631454
95284540
102831148
1116640a1
12b46490
13781848
14539a8c
153adcd3
hex2b332c

2831148 has 18 divisors (see below), whose sum is σ = 7156604. Its totient is φ = 943704.

The previous prime is 2831141. The next prime is 2831167. The reversal of 2831148 is 8411382.

2831148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (2831141) 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 5 ways as a sum of consecutive naturals, for example, 39286 + ... + 39357.

22831148 is an apocalyptic number.

It is an amenable number.

2831148 is an abundant number, since it is smaller than the sum of its proper divisors (4325456).

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

2831148 is a wasteful number, since it uses less digits than its factorization.

2831148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78653 (or 78648 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 2831148 is about 1682.6015571133. The cubic root of 2831148 is about 141.4666896248.

It can be divided in two parts, 283 and 1148, that added together give a triangular number (1431 = T53).

The spelling of 2831148 in words is "two million, eight hundred thirty-one thousand, one hundred forty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 78643 157286 235929 314572 471858 707787 943716 1415574 2831148