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30402014240 = 2551314616353
BaseRepresentation
bin11100010100000110…
…011110110000100000
32220110202202100020102
4130110012132300200
5444230403423430
621544432401532
72124250600013
oct342406366040
986422670212
1030402014240
1111991165304
125a856a62a8
132b36760450
1416859b537a
15bce089345
hex71419ec20

30402014240 has 48 divisors (see below), whose sum is σ = 77349745368. Its totient is φ = 11225358336.

The previous prime is 30402014231. The next prime is 30402014299. The reversal of 30402014240 is 4241020403.

It can be written as a sum of positive squares in 4 ways, for example, as 28166237584 + 2235776656 = 167828^2 + 47284^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7306097 + ... + 7310256.

Almost surely, 230402014240 is an apocalyptic number.

It is an amenable number.

30402014240 is an abundant number, since it is smaller than the sum of its proper divisors (46947731128).

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

30402014240 is a wasteful number, since it uses less digits than its factorization.

30402014240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14616381 (or 14616373 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 30402014240 its reverse (4241020403), we get a palindrome (34643034643).

The spelling of 30402014240 in words is "thirty billion, four hundred two million, fourteen thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 13 16 20 26 32 40 52 65 80 104 130 160 208 260 416 520 1040 2080 14616353 29232706 58465412 73081765 116930824 146163530 190012589 233861648 292327060 380025178 467723296 584654120 760050356 950062945 1169308240 1520100712 1900125890 2338616480 3040201424 3800251780 6080402848 7600503560 15201007120 30402014240