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30015013 = 717534759
BaseRepresentation
bin111001001111…
…1111000100101
32002110220212011
41302133320211
530140440023
62551154221
7513060220
oct162377045
962426764
1030015013
1115a407a6
12a075971
1362aba82
143db45b7
15297d50d
hex1c9fe25

30015013 has 16 divisors (see below), whose sum is σ = 37013760. Its totient is φ = 23751936.

The previous prime is 30014987. The next prime is 30015019. The reversal of 30015013 is 31051003.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30015013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30014984 and 30015002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30015019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3928 + ... + 8686.

It is an arithmetic number, because the mean of its divisors is an integer number (2313360).

Almost surely, 230015013 is an apocalyptic number.

It is an amenable number.

30015013 is a deficient number, since it is larger than the sum of its proper divisors (6998747).

30015013 is a wasteful number, since it uses less digits than its factorization.

30015013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4836.

The product of its (nonzero) digits is 45, while the sum is 13.

The square root of 30015013 is about 5478.5958967604. The cubic root of 30015013 is about 310.7750740423.

Adding to 30015013 its reverse (31051003), we get a palindrome (61066016).

The spelling of 30015013 in words is "thirty million, fifteen thousand, thirteen".

Divisors: 1 7 17 53 119 371 901 4759 6307 33313 80903 252227 566321 1765589 4287859 30015013