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30107291679 = 347193
BaseRepresentation
bin11100000010100010…
…001101000000011111
32212201020011212220000
4130002202031000133
5443124431313204
621455303425343
72114041520403
oct340242150037
985636155800
1030107291679
111184a865943
125a02a55253
132aba68c7ba
1416587b7103
15bb326e039
hex70288d01f

30107291679 has 20 divisors (see below), whose sum is σ = 45037729440. Its totient is φ = 20043611892.

The previous prime is 30107291651. The next prime is 30107291689. The reversal of 30107291679 is 97619270103.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is an ABA number since it can be written as A⋅BA, here for A=3, B=2157.

It is not a de Polignac number, because 30107291679 - 25 = 30107291647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30107291689) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 41873482 + ... + 41874200.

It is an arithmetic number, because the mean of its divisors is an integer number (2251886472).

Almost surely, 230107291679 is an apocalyptic number.

30107291679 is a deficient number, since it is larger than the sum of its proper divisors (14930437761).

30107291679 is an frugal number, since it uses more digits than its factorization.

30107291679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The spelling of 30107291679 in words is "thirty billion, one hundred seven million, two hundred ninety-one thousand, six hundred seventy-nine".

Divisors: 1 3 9 27 81 719 2157 6471 19413 58239 516961 1550883 4652649 13957947 41873841 371694959 1115084877 3345254631 10035763893 30107291679