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30013705156 = 22172100121017
BaseRepresentation
bin11011111100111101…
…001100101111000100
32212110201002012022111
4123330331030233010
5442432002031111
621442121510404
72111524166401
oct337475145704
985421065274
1030013705156
1111801a54a06
125997642404
132aa4183266
14164a1b52a8
15ba9e34a21
hex6fcf4cbc4

30013705156 has 24 divisors (see below), whose sum is σ = 55618924536. Its totient is φ = 14122752000.

The previous prime is 30013705061. The next prime is 30013705157. The reversal of 30013705156 is 65150731003.

It can be written as a sum of positive squares in 4 ways, for example, as 3686400 + 30010018756 = 1920^2 + 173234^2 .

It is not an unprimeable number, because it can be changed into a prime (30013705157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1417560 + ... + 1438576.

It is an arithmetic number, because the mean of its divisors is an integer number (2317455189).

Almost surely, 230013705156 is an apocalyptic number.

It is an amenable number.

30013705156 is a deficient number, since it is larger than the sum of its proper divisors (25605219380).

30013705156 is a wasteful number, since it uses less digits than its factorization.

30013705156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42039 (or 42037 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 31.

The spelling of 30013705156 in words is "thirty billion, thirteen million, seven hundred five thousand, one hundred fifty-six".

Divisors: 1 2 4 17 34 68 21001 21017 42002 42034 84004 84068 357017 357289 714034 714578 1428068 1429156 441378017 882756034 1765512068 7503426289 15006852578 30013705156