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30730556471 = 197322156133
BaseRepresentation
bin11100100111101011…
…110001010000110111
32221022122222000110012
4130213223301100313
51000414010301341
622041210250435
72135350264046
oct344753612067
987278860405
1030730556471
111203a663a0a
125b57726a1b
132b89842834
1416b749855d
15becd350eb
hex727af1437

30730556471 has 8 divisors (see below), whose sum is σ = 32791078320. Its totient is φ = 28714347072.

The previous prime is 30730556443. The next prime is 30730556477. The reversal of 30730556471 is 17465503703.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30730556471 is a prime.

It is a super-3 number, since 3×307305564713 (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30730556477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11076680 + ... + 11079453.

It is an arithmetic number, because the mean of its divisors is an integer number (4098884790).

Almost surely, 230730556471 is an apocalyptic number.

30730556471 is a deficient number, since it is larger than the sum of its proper divisors (2060521849).

30730556471 is a wasteful number, since it uses less digits than its factorization.

30730556471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22156225.

The product of its (nonzero) digits is 264600, while the sum is 41.

The spelling of 30730556471 in words is "thirty billion, seven hundred thirty million, five hundred fifty-six thousand, four hundred seventy-one".

Divisors: 1 19 73 1387 22156133 420966527 1617397709 30730556471