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979305145 = 57132179739
BaseRepresentation
bin111010010111110…
…000001010111001
32112020201212002221
4322113300022321
54001200231040
6241101524041
733160646020
oct7227601271
92466655087
10979305145
114628794a5
12233b73621
13127b72700
14940c18b7
155ae9474a
hex3a5f02b9

979305145 has 48 divisors (see below), whose sum is σ = 1540010880. Its totient is φ = 583345152.

The previous prime is 979305143. The next prime is 979305203. The reversal of 979305145 is 541503979.

It is not a de Polignac number, because 979305145 - 21 = 979305143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (979305143) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95686 + ... + 105424.

It is an arithmetic number, because the mean of its divisors is an integer number (32083560).

Almost surely, 2979305145 is an apocalyptic number.

It is an amenable number.

979305145 is a deficient number, since it is larger than the sum of its proper divisors (560705735).

979305145 is a wasteful number, since it uses less digits than its factorization.

979305145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9794 (or 9781 counting only the distinct ones).

The product of its (nonzero) digits is 170100, while the sum is 43.

The square root of 979305145 is about 31293.8515526613. The cubic root of 979305145 is about 993.0535738926.

The spelling of 979305145 in words is "nine hundred seventy-nine million, three hundred five thousand, one hundred forty-five".

Divisors: 1 5 7 13 17 35 65 85 91 119 169 221 455 595 845 1105 1183 1547 2873 5915 7735 9739 14365 20111 48695 68173 100555 126607 165563 340865 633035 827815 886249 1158941 1645891 2152319 4431245 5794705 8229455 10761595 11521237 15066233 27980147 57606185 75331165 139900735 195861029 979305145