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30060911772 = 223223139925951
BaseRepresentation
bin11011111111110001…
…010001110010011100
32212120222220112121200
4123333301101302130
5443031043134042
621450525355500
72112636351123
oct337761216234
985528815550
1030060911772
1111826667a41
1259ab408b90
132ab0ba1078
141652582aba
15bae15bc4c
hex6ffc51c9c

30060911772 has 72 divisors (see below), whose sum is σ = 79350835200. Its totient is φ = 9577418400.

The previous prime is 30060911743. The next prime is 30060911773. The reversal of 30060911772 is 27711906003.

It is a happy number.

30060911772 is a `hidden beast` number, since 30 + 0 + 609 + 1 + 17 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30060911773) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1145397 + ... + 1171347.

Almost surely, 230060911772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30060911772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39675417600).

30060911772 is an abundant number, since it is smaller than the sum of its proper divisors (49289923428).

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

30060911772 is a wasteful number, since it uses less digits than its factorization.

30060911772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27383 (or 27378 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The spelling of 30060911772 in words is "thirty billion, sixty million, nine hundred eleven thousand, seven hundred seventy-two".

Divisors: 1 2 3 4 6 9 12 18 23 36 46 69 92 138 207 276 414 828 1399 2798 4197 5596 8394 12591 16788 25182 25951 32177 50364 51902 64354 77853 96531 103804 128708 155706 193062 233559 289593 311412 386124 467118 579186 596873 934236 1158372 1193746 1790619 2387492 3581238 5371857 7162476 10743714 21487428 36305449 72610898 108916347 145221796 217832694 326749041 435665388 653498082 835025327 1306996164 1670050654 2505075981 3340101308 5010151962 7515227943 10020303924 15030455886 30060911772