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1230560056 = 2311671131847
BaseRepresentation
bin100100101011000…
…1101101100111000
310011202111221001101
41021112031230320
510010010410211
6322035101144
742331405435
oct11126155470
93152457041
101230560056
11581689a90
122a41417b4
13167c3435b
14b9606b8c
15730755c1
hex4958db38

1230560056 has 64 divisors (see below), whose sum is σ = 2578625280. Its totient is φ = 545825280.

The previous prime is 1230560039. The next prime is 1230560059. The reversal of 1230560056 is 6500650321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230560059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 665325 + ... + 667171.

It is an arithmetic number, because the mean of its divisors is an integer number (40291020).

Almost surely, 21230560056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1230560056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1289312640).

1230560056 is an abundant number, since it is smaller than the sum of its proper divisors (1348065224).

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

1230560056 is a wasteful number, since it uses less digits than its factorization.

1230560056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2044 (or 2040 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 1230560056 is about 35079.3394464605. The cubic root of 1230560056 is about 1071.6038648286.

It can be divided in two parts, 12305 and 60056, that added together give a square (72361 = 2692).

The spelling of 1230560056 in words is "one billion, two hundred thirty million, five hundred sixty thousand, fifty-six".

Divisors: 1 2 4 8 11 22 44 67 88 113 134 226 268 452 536 737 904 1243 1474 1847 2486 2948 3694 4972 5896 7388 7571 9944 14776 15142 20317 30284 40634 60568 81268 83281 123749 162536 166562 208711 247498 333124 417422 494996 666248 834844 989992 1361239 1669688 2295821 2722478 4591642 5444956 9183284 10889912 13983637 18366568 27967274 55934548 111869096 153820007 307640014 615280028 1230560056