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30748513208 = 2372389229837
BaseRepresentation
bin11100101000110000…
…010001001110111000
32221100220202022110112
4130220300101032320
51000433104410313
622043051203452
72135656023050
oct345060211670
987326668415
1030748513208
1112049809096
125b61746588
132b9048bc1a
1416b9a10560
15bee6d08a8
hex728c113b8

30748513208 has 32 divisors (see below), whose sum is σ = 65917538400. Its totient is φ = 13172360832.

The previous prime is 30748513199. The next prime is 30748513253. The reversal of 30748513208 is 80231584703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18866 + ... + 248702.

It is an arithmetic number, because the mean of its divisors is an integer number (2059923075).

Almost surely, 230748513208 is an apocalyptic number.

It is an amenable number.

30748513208 is an abundant number, since it is smaller than the sum of its proper divisors (35169025192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30748513208 is a wasteful number, since it uses less digits than its factorization.

30748513208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232239 (or 232235 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 30748513208 in words is "thirty billion, seven hundred forty-eight million, five hundred thirteen thousand, two hundred eight".

Divisors: 1 2 4 7 8 14 28 56 2389 4778 9556 16723 19112 33446 66892 133784 229837 459674 919348 1608859 1838696 3217718 6435436 12870872 549080593 1098161186 2196322372 3843564151 4392644744 7687128302 15374256604 30748513208