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30917712029 = 292618940709
BaseRepresentation
bin11100110010110101…
…101101100010011101
32221210201010111121112
4130302311231202131
51001304413241104
622111533511405
72143112134061
oct346265554235
987721114545
1030917712029
1112126273726
125baa342565
132bb9550679
1416d4295aa1
15c0e4a386e
hex732d6d89d

30917712029 has 8 divisors (see below), whose sum is σ = 31985847000. Its totient is φ = 29849710912.

The previous prime is 30917711999. The next prime is 30917712041. The reversal of 30917712029 is 92021771903.

It can be written as a sum of positive squares in 4 ways, for example, as 6644695225 + 24273016804 = 81515^2 + 155798^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 30917712029 - 216 = 30917646493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30917612029) 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, 739127 + ... + 779835.

It is an arithmetic number, because the mean of its divisors is an integer number (3998230875).

Almost surely, 230917712029 is an apocalyptic number.

It is an amenable number.

30917712029 is a deficient number, since it is larger than the sum of its proper divisors (1068134971).

30917712029 is a wasteful number, since it uses less digits than its factorization.

30917712029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66927.

The product of its (nonzero) digits is 47628, while the sum is 41.

The spelling of 30917712029 in words is "thirty billion, nine hundred seventeen million, seven hundred twelve thousand, twenty-nine".

Divisors: 1 29 26189 40709 759481 1180561 1066128001 30917712029