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8150013 = 323972281
BaseRepresentation
bin11111000101101111111101
3120100001201100
4133011233331
54041300023
6450403313
7126162654
oct37055775
916301640
108150013
114667253
122890539
1318c47c1
14112219b
15aaec43
hex7c5bfd

8150013 has 12 divisors (see below), whose sum is σ = 11807068. Its totient is φ = 5417280.

The previous prime is 8150011. The next prime is 8150017. The reversal of 8150013 is 3100518.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5184729 + 2965284 = 2277^2 + 1722^2 .

It is not a de Polignac number, because 8150013 - 21 = 8150011 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8150011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2433 + ... + 4713.

Almost surely, 28150013 is an apocalyptic number.

It is an amenable number.

8150013 is a deficient number, since it is larger than the sum of its proper divisors (3657055).

8150013 is a wasteful number, since it uses less digits than its factorization.

8150013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2684 (or 2681 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 8150013 is about 2854.8227615738. The cubic root of 8150013 is about 201.2423748767.

The spelling of 8150013 in words is "eight million, one hundred fifty thousand, thirteen".

Divisors: 1 3 9 397 1191 2281 3573 6843 20529 905557 2716671 8150013