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2013293 = 17118429
BaseRepresentation
bin111101011100001101101
310210021201102
413223201231
51003411133
6111052445
723053442
oct7534155
93707642
102013293
111155687
12811125
135564c9
143a59c9
1529b7e8
hex1eb86d

2013293 has 4 divisors (see below), whose sum is σ = 2131740. Its totient is φ = 1894848.

The previous prime is 2013289. The next prime is 2013299. The reversal of 2013293 is 3923102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3923102 = 21961551.

It can be written as a sum of positive squares in 2 ways, for example, as 1087849 + 925444 = 1043^2 + 962^2 .

It is a cyclic number.

It is not a de Polignac number, because 2013293 - 22 = 2013289 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013299) 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 3 ways as a sum of consecutive naturals, for example, 59198 + ... + 59231.

It is an arithmetic number, because the mean of its divisors is an integer number (532935).

22013293 is an apocalyptic number.

It is an amenable number.

2013293 is a deficient number, since it is larger than the sum of its proper divisors (118447).

2013293 is a wasteful number, since it uses less digits than its factorization.

2013293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118446.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 2013293 is about 1418.9055641585. The cubic root of 2013293 is about 126.2706243468.

Adding to 2013293 its reverse (3923102), we get a palindrome (5936395).

The spelling of 2013293 in words is "two million, thirteen thousand, two hundred ninety-three".

Divisors: 1 17 118429 2013293