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30000100240 = 2451137921379
BaseRepresentation
bin11011111100001001…
…010011001110010000
32212102202110222212201
4123330021103032100
5442420011201430
621440514132544
72111300434045
oct337411231620
985382428781
1030000100240
11117a5302380
125992b81154
132aa13cb906
1416484731cc
15ba8b488ca
hex6fc253390

30000100240 has 80 divisors (see below), whose sum is σ = 78147766080. Its totient is φ = 10614274560.

The previous prime is 30000100219. The next prime is 30000100241. The reversal of 30000100240 is 4200100003.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (30000100241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 428130 + ... + 493249.

It is an arithmetic number, because the mean of its divisors is an integer number (976847076).

Almost surely, 230000100240 is an apocalyptic number.

It is an amenable number.

30000100240 is an abundant number, since it is smaller than the sum of its proper divisors (48147665840).

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

30000100240 is a wasteful number, since it uses less digits than its factorization.

30000100240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921440 (or 921434 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

Adding to 30000100240 its reverse (4200100003), we get a palindrome (34200200243).

The spelling of 30000100240 in words is "thirty billion, one hundred thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 11 16 20 22 37 40 44 55 74 80 88 110 148 176 185 220 296 370 407 440 592 740 814 880 1480 1628 2035 2960 3256 4070 6512 8140 16280 32560 921379 1842758 3685516 4606895 7371032 9213790 10135169 14742064 18427580 20270338 34091023 36855160 40540676 50675845 68182046 73710320 81081352 101351690 136364092 162162704 170455115 202703380 272728184 340910230 375001253 405406760 545456368 681820460 750002506 810813520 1363640920 1500005012 1875006265 2727281840 3000010024 3750012530 6000020048 7500025060 15000050120 30000100240