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13028938029 = 321447659781
BaseRepresentation
bin11000010001001010…
…11101000100101101
31020122000020121222100
430020211131010231
5203140402004104
65552503205313
7640604101032
oct141045350455
936560217870
1013028938029
11558654aa88
122637446839
1312c83944b3
148b853d389
15513c6b139
hex30895d12d

13028938029 has 6 divisors (see below), whose sum is σ = 18819577166. Its totient is φ = 8685958680.

The previous prime is 13028937991. The next prime is 13028938033. The reversal of 13028938029 is 92083982031.

It can be written as a sum of positive squares in only one way, i.e., 12210692004 + 818246025 = 110502^2 + 28605^2 .

It is not a de Polignac number, because 13028938029 - 215 = 13028905261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13028938099) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 723829882 + ... + 723829899.

Almost surely, 213028938029 is an apocalyptic number.

It is an amenable number.

13028938029 is a deficient number, since it is larger than the sum of its proper divisors (5790639137).

13028938029 is a wasteful number, since it uses less digits than its factorization.

13028938029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447659787 (or 1447659784 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 13028938029 in words is "thirteen billion, twenty-eight million, nine hundred thirty-eight thousand, twenty-nine".

Divisors: 1 3 9 1447659781 4342979343 13028938029