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30207173871 = 371438436851
BaseRepresentation
bin11100001000011111…
…001110010011101111
32212222012010102111110
4130020133032103233
5443331014030441
621513232323103
72116363512210
oct341037162357
985865112443
1030207173871
11118a1186906
125a303a3493
132b052917a4
141667b77407
15bbbdedb16
hex7087ce4ef

30207173871 has 8 divisors (see below), whose sum is σ = 46029979264. Its totient is φ = 17261242200.

The previous prime is 30207173753. The next prime is 30207173873. The reversal of 30207173871 is 17837170203.

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

It is not a de Polignac number, because 30207173871 - 27 = 30207173743 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 (30207173873) 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, 719218405 + ... + 719218446.

It is an arithmetic number, because the mean of its divisors is an integer number (5753747408).

Almost surely, 230207173871 is an apocalyptic number.

30207173871 is a deficient number, since it is larger than the sum of its proper divisors (15822805393).

30207173871 is a wasteful number, since it uses less digits than its factorization.

30207173871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438436861.

The product of its (nonzero) digits is 49392, while the sum is 39.

The spelling of 30207173871 in words is "thirty billion, two hundred seven million, one hundred seventy-three thousand, eight hundred seventy-one".

Divisors: 1 3 7 21 1438436851 4315310553 10069057957 30207173871