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2981706 = 2371343127
BaseRepresentation
bin1011010111111101001010
312121111010120
423113331022
51230403311
6143524110
734226010
oct13277512
95544116
102981706
111757222
12bb9636
13805230
145788b0
153dd706
hex2d7f4a

2981706 has 64 divisors (see below), whose sum is σ = 7569408. Its totient is φ = 762048.

The previous prime is 2981677. The next prime is 2981707. The reversal of 2981706 is 6071892.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2981707) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23415 + ... + 23541.

It is an arithmetic number, because the mean of its divisors is an integer number (118272).

22981706 is an apocalyptic number.

2981706 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2981706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3784704).

2981706 is an abundant number, since it is smaller than the sum of its proper divisors (4587702).

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

2981706 is a wasteful number, since it uses less digits than its factorization.

2981706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 2981706 is about 1726.7617090960. The cubic root of 2981706 is about 143.9311978419.

The spelling of 2981706 in words is "two million, nine hundred eighty-one thousand, seven hundred six".

Divisors: 1 2 3 6 7 13 14 21 26 39 42 43 78 86 91 127 129 182 254 258 273 301 381 546 559 602 762 889 903 1118 1651 1677 1778 1806 2667 3302 3354 3913 4953 5334 5461 7826 9906 10922 11557 11739 16383 23114 23478 32766 34671 38227 69342 70993 76454 114681 141986 212979 229362 425958 496951 993902 1490853 2981706