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30207820852 = 22112195361979
BaseRepresentation
bin11100001000100001…
…101100010000110100
32212222020100021222201
4130020201230100310
5443331200231402
621513254234244
72116402145356
oct341041542064
985866307881
1030207820852
11118a1588a00
125a30655984
132b0545a111
141667ca50d6
15bbbeca687
hex70886c434

30207820852 has 72 divisors (see below), whose sum is σ = 62319650400. Its totient is φ = 12762509760.

The previous prime is 30207820837. The next prime is 30207820873. The reversal of 30207820852 is 25802870203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 456399 + ... + 518377.

It is an arithmetic number, because the mean of its divisors is an integer number (865550700).

Almost surely, 230207820852 is an apocalyptic number.

It is an amenable number.

30207820852 is an abundant number, since it is smaller than the sum of its proper divisors (32111829548).

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

30207820852 is a wasteful number, since it uses less digits than its factorization.

30207820852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62077 (or 62064 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 30207820852 in words is "thirty billion, two hundred seven million, eight hundred twenty thousand, eight hundred fifty-two".

Divisors: 1 2 4 11 19 22 38 44 53 76 106 121 209 212 242 418 484 583 836 1007 1166 2014 2299 2332 4028 4598 6413 9196 11077 12826 22154 25652 44308 61979 121847 123958 243694 247916 487388 681769 1177601 1363538 2355202 2727076 3284887 4710404 6569774 7499459 12953611 13139548 14998918 25907222 29997836 36133757 51814444 62412853 72267514 124825706 142489721 144535028 249651412 284979442 397471327 569958884 686541383 794942654 1373082766 1589885308 2746165532 7551955213 15103910426 30207820852