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30642532130 = 2571725750027
BaseRepresentation
bin11100100010011011…
…111110111100100010
32221002112022220202102
4130202123332330202
51000223442012010
622024343450402
72133231140240
oct344233767442
987075286672
1030642532130
1111aa4a01a21
125b32156a02
132b74532c22
1416a9903790
15be5248ba5
hex7226fef22

30642532130 has 32 divisors (see below), whose sum is σ = 66744072576. Its totient is φ = 9888009984.

The previous prime is 30642532111. The next prime is 30642532133. The reversal of 30642532130 is 3123524603.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30642532093 and 30642532102.

It is not an unprimeable number, because it can be changed into a prime (30642532133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12873824 + ... + 12876203.

It is an arithmetic number, because the mean of its divisors is an integer number (2085752268).

Almost surely, 230642532130 is an apocalyptic number.

30642532130 is an abundant number, since it is smaller than the sum of its proper divisors (36101540446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30642532130 is a wasteful number, since it uses less digits than its factorization.

30642532130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25750058.

The product of its (nonzero) digits is 12960, while the sum is 29.

The spelling of 30642532130 in words is "thirty billion, six hundred forty-two million, five hundred thirty-two thousand, one hundred thirty".

Divisors: 1 2 5 7 10 14 17 34 35 70 85 119 170 238 595 1190 25750027 51500054 128750135 180250189 257500270 360500378 437750459 875500918 901250945 1802501890 2188752295 3064253213 4377504590 6128506426 15321266065 30642532130