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30152212155 = 32513311662653
BaseRepresentation
bin11100000101001101…
…100011111010111011
32212211100201002012100
4130011031203322323
5443222431242110
621503550314443
72115125401032
oct340515437273
985740632170
1030152212155
11118731572aa
125a15ab8a23
132ac6a89b70
14166074b719
15bb7193bc0
hex705363ebb

30152212155 has 48 divisors (see below), whose sum is σ = 58099781376. Its totient is φ = 14365313280.

The previous prime is 30152212151. The next prime is 30152212157. The reversal of 30152212155 is 55121225103.

It is not a de Polignac number, because 30152212155 - 22 = 30152212151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30152212151) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 813192 + ... + 849461.

It is an arithmetic number, because the mean of its divisors is an integer number (1210412112).

Almost surely, 230152212155 is an apocalyptic number.

30152212155 is a deficient number, since it is larger than the sum of its proper divisors (27947569221).

30152212155 is a wasteful number, since it uses less digits than its factorization.

30152212155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662708 (or 1662705 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 30152212155 its reverse (55121225103), we get a palindrome (85273437258).

The spelling of 30152212155 in words is "thirty billion, one hundred fifty-two million, two hundred twelve thousand, one hundred fifty-five".

Divisors: 1 3 5 9 13 15 31 39 45 65 93 117 155 195 279 403 465 585 1209 1395 2015 3627 6045 18135 1662653 4987959 8313265 14963877 21614489 24939795 51542243 64843467 74819385 108072445 154626729 194530401 257711215 324217335 463880187 670049159 773133645 972652005 2010147477 2319400935 3350245795 6030442431 10050737385 30152212155