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30054221440 = 275234743441
BaseRepresentation
bin11011111111010111…
…110000011010000000
32212120112022122012121
4123333113300122000
5443022340041230
621450130134024
72112525444565
oct337727603200
985515278177
1030054221440
1111822908441
1259a9121314
132aac69aaa9
14165172086c
15bad78977a
hex6ff5f0680

30054221440 has 128 divisors (see below), whose sum is σ = 76569131520. Its totient is φ = 11254087680.

The previous prime is 30054221411. The next prime is 30054221537. The reversal of 30054221440 is 4412245003.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 670120 + ... + 713560.

It is an arithmetic number, because the mean of its divisors is an integer number (598196340).

Almost surely, 230054221440 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 30054221440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38284565760).

30054221440 is an abundant number, since it is smaller than the sum of its proper divisors (46514910080).

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

30054221440 is a wasteful number, since it uses less digits than its factorization.

30054221440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43530 (or 43518 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 30054221440 its reverse (4412245003), we get a palindrome (34466466443).

The spelling of 30054221440 in words is "thirty billion, fifty-four million, two hundred twenty-one thousand, four hundred forty".

Divisors: 1 2 4 5 8 10 16 20 23 32 40 46 47 64 80 92 94 115 128 160 184 188 230 235 320 368 376 460 470 640 736 752 920 940 1081 1472 1504 1840 1880 2162 2944 3008 3680 3760 4324 5405 6016 7360 7520 8648 10810 14720 15040 17296 21620 30080 34592 43240 43441 69184 86480 86882 138368 172960 173764 217205 345920 347528 434410 691840 695056 868820 999143 1390112 1737640 1998286 2041727 2780224 3475280 3996572 4083454 4995715 5560448 6950560 7993144 8166908 9991430 10208635 13901120 15986288 16333816 19982860 20417270 27802240 31972576 32667632 39965720 40834540 46959721 63945152 65335264 79931440 81669080 93919442 127890304 130670528 159862880 163338160 187838884 234798605 261341056 319725760 326676320 375677768 469597210 639451520 653352640 751355536 939194420 1306705280 1502711072 1878388840 3005422144 3756777680 6010844288 7513555360 15027110720 30054221440