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30380015806 = 276135573789
BaseRepresentation
bin11100010010110010…
…100100000010111110
32220102020100201001121
4130102302210002332
5444204241001211
621542325101154
72123562605440
oct342262440276
986366321047
1030380015806
111197a7aa588
125a7a2577ba
132b3202a51a
141682aca490
15bcc191271
hex712ca40be

30380015806 has 16 divisors (see below), whose sum is σ = 52933799520. Its totient is φ = 12806563680.

The previous prime is 30380015791. The next prime is 30380015839. The reversal of 30380015806 is 60851008303.

It is a happy number.

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, 17786041 + ... + 17787748.

It is an arithmetic number, because the mean of its divisors is an integer number (3308362470).

Almost surely, 230380015806 is an apocalyptic number.

30380015806 is a deficient number, since it is larger than the sum of its proper divisors (22553783714).

30380015806 is a wasteful number, since it uses less digits than its factorization.

30380015806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35573859.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 30380015806 in words is "thirty billion, three hundred eighty million, fifteen thousand, eight hundred six".

Divisors: 1 2 7 14 61 122 427 854 35573789 71147578 249016523 498033046 2170001129 4340002258 15190007903 30380015806