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1228230560 = 25523932119
BaseRepresentation
bin100100100110101…
…0100111110100000
310011121010120120202
41021031110332200
510003411334220
6321513124332
742302534054
oct11115247640
93147116522
101228230560
11580338887
122a33b96a8
131675c9c5b
14b919bc64
1572c65275
hex49354fa0

1228230560 has 48 divisors (see below), whose sum is σ = 2913926400. Its totient is φ = 489221376.

The previous prime is 1228230541. The next prime is 1228230611. The reversal of 1228230560 is 650328221.

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, 22181 + ... + 54299.

It is an arithmetic number, because the mean of its divisors is an integer number (60706800).

Almost surely, 21228230560 is an apocalyptic number.

1228230560 is a gapful number since it is divisible by the number (10) 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 1228230560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1456963200).

1228230560 is an abundant number, since it is smaller than the sum of its proper divisors (1685695840).

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

1228230560 is a wasteful number, since it uses less digits than its factorization.

1228230560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32373 (or 32365 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1228230560 is about 35046.1204700321. The cubic root of 1228230560 is about 1070.9272423543.

Adding to 1228230560 its reverse (650328221), we get a palindrome (1878558781).

The spelling of 1228230560 in words is "one billion, two hundred twenty-eight million, two hundred thirty thousand, five hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 239 478 956 1195 1912 2390 3824 4780 7648 9560 19120 32119 38240 64238 128476 160595 256952 321190 513904 642380 1027808 1284760 2569520 5139040 7676441 15352882 30705764 38382205 61411528 76764410 122823056 153528820 245646112 307057640 614115280 1228230560