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8130015 = 325180667
BaseRepresentation
bin11111000000110111011111
3120022001021200
4133000313133
54040130030
6450130543
7126050445
oct37006737
916261250
108130015
114653223
122880a53
1318b867a
141118b95
15aa8d60
hex7c0ddf

8130015 has 12 divisors (see below), whose sum is σ = 14092104. Its totient is φ = 4335984.

The previous prime is 8130007. The next prime is 8130071. The reversal of 8130015 is 5100318.

It is a happy number.

It is not a de Polignac number, because 8130015 - 23 = 8130007 is a prime.

8130015 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8130015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90289 + ... + 90378.

It is an arithmetic number, because the mean of its divisors is an integer number (1174342).

Almost surely, 28130015 is an apocalyptic number.

8130015 is a deficient number, since it is larger than the sum of its proper divisors (5962089).

8130015 is a wasteful number, since it uses less digits than its factorization.

8130015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180678 (or 180675 counting only the distinct ones).

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

The square root of 8130015 is about 2851.3181162403. The cubic root of 8130015 is about 201.0776413500.

The spelling of 8130015 in words is "eight million, one hundred thirty thousand, fifteen".

Divisors: 1 3 5 9 15 45 180667 542001 903335 1626003 2710005 8130015