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30630618380 = 22529149354439
BaseRepresentation
bin11100100001101110…
…100010010100001100
32221001200220122011102
4130201232202110030
51000212414242010
622023240242232
72133024650255
oct344156422414
987050818142
1030630618380
1111a99204a4a
125b2a170378
132b71c2127b
1416a80c1b2c
15be4193ba5
hex721ba250c

30630618380 has 48 divisors (see below), whose sum is σ = 66989160000. Its totient is φ = 11750328576.

The previous prime is 30630618233. The next prime is 30630618383. The reversal of 30630618380 is 8381603603.

It is not an unprimeable number, because it can be changed into a prime (30630618383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90800 + ... + 263639.

It is an arithmetic number, because the mean of its divisors is an integer number (1395607500).

Almost surely, 230630618380 is an apocalyptic number.

It is an amenable number.

30630618380 is an abundant number, since it is smaller than the sum of its proper divisors (36358541620).

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

30630618380 is a wasteful number, since it uses less digits than its factorization.

30630618380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354626 (or 354624 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 30630618380 in words is "thirty billion, six hundred thirty million, six hundred eighteen thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 29 58 116 145 149 290 298 580 596 745 1490 2980 4321 8642 17284 21605 43210 86420 354439 708878 1417756 1772195 3544390 7088780 10278731 20557462 41114924 51393655 52811411 102787310 105622822 205574620 211245644 264057055 528114110 1056228220 1531530919 3063061838 6126123676 7657654595 15315309190 30630618380