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13019045 = 513200293
BaseRepresentation
bin110001101010…
…011110100101
3220111102202212
4301222132211
511313102140
61143013205
7215442254
oct61523645
926442685
1013019045
117392446
12443a205
13290aaa0
141a2c79b
151222765
hexc6a7a5

13019045 has 8 divisors (see below), whose sum is σ = 16824696. Its totient is φ = 9614016.

The previous prime is 13019033. The next prime is 13019051. The reversal of 13019045 is 54091031.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2669956 + 10349089 = 1634^2 + 3217^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13019045 - 222 = 8824741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13019045.

It is a congruent number.

It is an unprimeable number.

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, 100082 + ... + 100211.

It is an arithmetic number, because the mean of its divisors is an integer number (2103087).

Almost surely, 213019045 is an apocalyptic number.

It is an amenable number.

13019045 is a deficient number, since it is larger than the sum of its proper divisors (3805651).

13019045 is a wasteful number, since it uses less digits than its factorization.

13019045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200311.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 13019045 is about 3608.1913751906. The cubic root of 13019045 is about 235.2482362561.

The spelling of 13019045 in words is "thirteen million, nineteen thousand, forty-five".

Divisors: 1 5 13 65 200293 1001465 2603809 13019045