Search a number
-
+
2680743 = 31368737
BaseRepresentation
bin1010001110011110100111
312001012021210
422032132213
51141240433
6133242503
731533402
oct12163647
95035253
102680743
11157109a
12a93433
1372b250
144dad39
1537e463
hex28e7a7

2680743 has 8 divisors (see below), whose sum is σ = 3849328. Its totient is φ = 1649664.

The previous prime is 2680721. The next prime is 2680753. The reversal of 2680743 is 3470862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2680743 - 29 = 2680231 is a prime.

It is a Duffinian number.

2680743 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2680743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2680753) 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 7 ways as a sum of consecutive naturals, for example, 34330 + ... + 34407.

It is an arithmetic number, because the mean of its divisors is an integer number (481166).

22680743 is an apocalyptic number.

2680743 is a deficient number, since it is larger than the sum of its proper divisors (1168585).

2680743 is a wasteful number, since it uses less digits than its factorization.

2680743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68753.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 2680743 is about 1637.2974683911. The cubic root of 2680743 is about 138.9158264077.

The spelling of 2680743 in words is "two million, six hundred eighty thousand, seven hundred forty-three".

Divisors: 1 3 13 39 68737 206211 893581 2680743