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245465660 = 2251123139349
BaseRepresentation
bin11101010000110…
…00001000111100
3122002212221120202
432220120020330
51000314400120
640205103032
76040265216
oct1650301074
9562787522
10245465660
11116616a90
126a257a78
133bb1586b
14248595b6
151683a875
hexea1823c

245465660 has 96 divisors (see below), whose sum is σ = 592704000. Its totient is φ = 84522240.

The previous prime is 245465651. The next prime is 245465677. The reversal of 245465660 is 66564542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 703166 + ... + 703514.

It is an arithmetic number, because the mean of its divisors is an integer number (6174000).

Almost surely, 2245465660 is an apocalyptic number.

245465660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245465660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296352000).

245465660 is an abundant number, since it is smaller than the sum of its proper divisors (347238340).

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

245465660 is a wasteful number, since it uses less digits than its factorization.

245465660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The square root of 245465660 is about 15667.3437442344. The cubic root of 245465660 is about 626.1286571194.

The spelling of 245465660 in words is "two hundred forty-five million, four hundred sixty-five thousand, six hundred sixty".

Divisors: 1 2 4 5 10 11 20 22 23 44 46 55 92 110 115 139 220 230 253 278 349 460 506 556 695 698 1012 1265 1390 1396 1529 1745 2530 2780 3058 3197 3490 3839 5060 6116 6394 6980 7645 7678 8027 12788 15290 15356 15985 16054 19195 30580 31970 32108 35167 38390 40135 48511 63940 70334 76780 80270 88297 97022 140668 160540 175835 176594 194044 242555 351670 353188 441485 485110 533621 703340 882970 970220 1067242 1115753 1765940 2134484 2231506 2668105 4463012 5336210 5578765 10672420 11157530 12273283 22315060 24546566 49093132 61366415 122732830 245465660