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2971248 = 243737239
BaseRepresentation
bin1011010101011001110000
312120221210020
423111121300
51230034443
6143403440
734153350
oct13253160
95527706
102971248
11174a385
12bb3580
13800547
14574b60
153da583
hex2d5670

2971248 has 80 divisors (see below), whose sum is σ = 9047040. Its totient is φ = 822528.

The previous prime is 2971247. The next prime is 2971259. The reversal of 2971248 is 8421792.

It is a happy number.

2971248 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×29712483 = 78693336986713214976, which contains 333 as substring.

Its product of digits (8064) is a multiple of the sum of its prime divisors (288).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2971247) 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 15 ways as a sum of consecutive naturals, for example, 12313 + ... + 12551.

It is an arithmetic number, because the mean of its divisors is an integer number (113088).

22971248 is an apocalyptic number.

2971248 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2971248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4523520).

2971248 is an abundant number, since it is smaller than the sum of its proper divisors (6075792).

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

2971248 is a wasteful number, since it uses less digits than its factorization.

2971248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 288 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 2971248 is about 1723.7308374569. The cubic root of 2971248 is about 143.7627265355.

The spelling of 2971248 in words is "two million, nine hundred seventy-one thousand, two hundred forty-eight".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 37 42 48 56 74 84 111 112 148 168 222 239 259 296 336 444 478 518 592 717 777 888 956 1036 1434 1554 1673 1776 1912 2072 2868 3108 3346 3824 4144 5019 5736 6216 6692 8843 10038 11472 12432 13384 17686 20076 26529 26768 35372 40152 53058 61901 70744 80304 106116 123802 141488 185703 212232 247604 371406 424464 495208 742812 990416 1485624 2971248