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30470345540 = 22553269106861
BaseRepresentation
bin11100011000001011…
…001001001101000100
32220122112022221011022
4130120023021031010
5444400402024130
621555313130312
72126040443435
oct343013111504
986575287138
1030470345540
1111a16796658
125aa4559998
132b4796657b
141690ac148c
15bd50857e5
hex7182c9344

30470345540 has 48 divisors (see below), whose sum is σ = 65438014320. Its totient is φ = 11913607680.

The previous prime is 30470345533. The next prime is 30470345557. The reversal of 30470345540 is 4554307403.

It can be written as a sum of positive squares in 8 ways, for example, as 1045746244 + 29424599296 = 32338^2 + 171536^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30470345540.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231710 + ... + 338570.

It is an arithmetic number, because the mean of its divisors is an integer number (1363291965).

Almost surely, 230470345540 is an apocalyptic number.

It is an amenable number.

30470345540 is an abundant number, since it is smaller than the sum of its proper divisors (34967668780).

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

30470345540 is a wasteful number, since it uses less digits than its factorization.

30470345540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107192 (or 107190 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 35.

The spelling of 30470345540 in words is "thirty billion, four hundred seventy million, three hundred forty-five thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 53 106 212 265 269 530 538 1060 1076 1345 2690 5380 14257 28514 57028 71285 106861 142570 213722 285140 427444 534305 1068610 2137220 5663633 11327266 22654532 28318165 28745609 56636330 57491218 113272660 114982436 143728045 287456090 574912180 1523517277 3047034554 6094069108 7617586385 15235172770 30470345540