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7680949144 = 2311671302739
BaseRepresentation
bin1110010011101000…
…11111101110011000
3201211022001122101221
413021310133232120
5111212310333034
63310101221424
7361224663511
oct71164375630
921738048357
107680949144
113291771860
1215a4401874
13955404c2b
1452c175a08
152ee4c6bb4
hex1c9d1fb98

7680949144 has 32 divisors (see below), whose sum is σ = 15945537600. Its totient is φ = 3439228320.

The previous prime is 7680949099. The next prime is 7680949147. The reversal of 7680949144 is 4419490867.

It is a junction number, because it is equal to n+sod(n) for n = 7680949091 and 7680949100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7680949147) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 645474 + ... + 657265.

It is an arithmetic number, because the mean of its divisors is an integer number (498298050).

Almost surely, 27680949144 is an apocalyptic number.

It is an amenable number.

7680949144 is an abundant number, since it is smaller than the sum of its proper divisors (8264588456).

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

7680949144 is a wasteful number, since it uses less digits than its factorization.

7680949144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302823 (or 1302819 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 7680949144 is about 87641.0243208054. The cubic root of 7680949144 is about 1973.0509335605.

The spelling of 7680949144 in words is "seven billion, six hundred eighty million, nine hundred forty-nine thousand, one hundred forty-four".

Divisors: 1 2 4 8 11 22 44 67 88 134 268 536 737 1474 2948 5896 1302739 2605478 5210956 10421912 14330129 28660258 57320516 87283513 114641032 174567026 349134052 698268104 960118643 1920237286 3840474572 7680949144