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30070387968 = 283208318797
BaseRepresentation
bin11100000000010101…
…011011010100000000
32212121122201222111220
4130000111123110000
5443041004403333
621451504435040
72113113036405
oct340025332400
985548658456
1030070387968
1111830a4a605
1259b2618a80
132ab2b3b39a
14165392c2ac
15baedce8b3
hex70055b500

30070387968 has 72 divisors (see below), whose sum is σ = 80073765408. Its totient is φ = 10018117632.

The previous prime is 30070387937. The next prime is 30070388003. The reversal of 30070387968 is 86978307003.

It is a self number, because there is not a number n which added to its sum of digits gives 30070387968.

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, 1590346 + ... + 1609142.

Almost surely, 230070387968 is an apocalyptic number.

It is an amenable number.

30070387968 is an abundant number, since it is smaller than the sum of its proper divisors (50003377440).

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

30070387968 is a wasteful number, since it uses less digits than its factorization.

30070387968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20899 (or 20885 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 30070387968 in words is "thirty billion, seventy million, three hundred eighty-seven thousand, nine hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 64 96 128 192 256 384 768 2083 4166 6249 8332 12498 16664 18797 24996 33328 37594 49992 56391 66656 75188 99984 112782 133312 150376 199968 225564 266624 300752 399936 451128 533248 601504 799872 902256 1203008 1599744 1804512 2406016 3609024 4812032 7218048 14436096 39154151 78308302 117462453 156616604 234924906 313233208 469849812 626466416 939699624 1252932832 1879399248 2505865664 3758798496 5011731328 7517596992 10023462656 15035193984 30070387968