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30808972874 = 2171627556943
BaseRepresentation
bin11100101100010110…
…111001111001001010
32221112010111222112102
4130230112321321022
51001044044112444
622053051113402
72140321643231
oct345426717112
987463458472
1030808972874
111207a953359
125b79a42862
132b9cb6a184
1416c3a6bb18
15c04b7484e
hex72c5b9e4a

30808972874 has 16 divisors (see below), whose sum is σ = 48962060928. Its totient is φ = 14489403072.

The previous prime is 30808972871. The next prime is 30808972877. The reversal of 30808972874 is 47827980803.

It is an interprime number because it is at equal distance from previous prime (30808972871) and next prime (30808972877).

It is not an unprimeable number, because it can be changed into a prime (30808972871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223154 + ... + 333789.

It is an arithmetic number, because the mean of its divisors is an integer number (3060128808).

Almost surely, 230808972874 is an apocalyptic number.

30808972874 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

30808972874 is a deficient number, since it is larger than the sum of its proper divisors (18153088054).

30808972874 is a wasteful number, since it uses less digits than its factorization.

30808972874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558589.

The product of its (nonzero) digits is 5419008, while the sum is 56.

The spelling of 30808972874 in words is "thirty billion, eight hundred eight million, nine hundred seventy-two thousand, eight hundred seventy-four".

Divisors: 1 2 17 34 1627 3254 27659 55318 556943 1113886 9468031 18936062 906146261 1812292522 15404486437 30808972874