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30389502856 = 237039539663
BaseRepresentation
bin11100010011010110…
…110000001110001000
32220102220012200211211
4130103112300032020
5444214203042411
621543304302504
72124036340456
oct342326601610
986386180754
1030389502856
111198509a319
125a81471a34
132b33c9c76b
1416840799d6
15bcce17221
hex7135b0388

30389502856 has 16 divisors (see below), whose sum is σ = 56988518400. Its totient is φ = 15192564624.

The previous prime is 30389502853. The next prime is 30389502907. The reversal of 30389502856 is 65820598303.

It is not an unprimeable number, because it can be changed into a prime (30389502853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213520 + ... + 326143.

It is an arithmetic number, because the mean of its divisors is an integer number (3561782400).

Almost surely, 230389502856 is an apocalyptic number.

It is an amenable number.

30389502856 is a deficient number, since it is larger than the sum of its proper divisors (26599015544).

30389502856 is a wasteful number, since it uses less digits than its factorization.

30389502856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546708 (or 546704 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 30389502856 in words is "thirty billion, three hundred eighty-nine million, five hundred two thousand, eight hundred fifty-six".

Divisors: 1 2 4 8 7039 14078 28156 56312 539663 1079326 2158652 4317304 3798687857 7597375714 15194751428 30389502856