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2981013 = 3732897
BaseRepresentation
bin1011010111110010010101
312121110011220
423113302111
51230343023
6143520553
734224000
oct13276225
95543156
102981013
111756752
12bb9159
13804b19
14578537
153dd3e3
hex2d7c95

2981013 has 16 divisors (see below), whose sum is σ = 4636800. Its totient is φ = 1702848.

The previous prime is 2980993. The next prime is 2981021. The reversal of 2981013 is 3101892.

It is not a de Polignac number, because 2981013 - 25 = 2980981 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2981023) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 420 + ... + 2477.

It is an arithmetic number, because the mean of its divisors is an integer number (289800).

22981013 is an apocalyptic number.

It is an amenable number.

2981013 is a deficient number, since it is larger than the sum of its proper divisors (1655787).

2981013 is an equidigital number, since it uses as much as digits as its factorization.

2981013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2921 (or 2907 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 2981013 is about 1726.5610328048. The cubic root of 2981013 is about 143.9200462788.

The spelling of 2981013 in words is "two million, nine hundred eighty-one thousand, thirteen".

Divisors: 1 3 7 21 49 147 343 1029 2897 8691 20279 60837 141953 425859 993671 2981013