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1230402330 = 232561271827
BaseRepresentation
bin100100101010110…
…0111001100011010
310011202012220200200
41021111213030122
510004440333310
6322031443030
742330150543
oct11125471432
93152186620
101230402330
11581591533
122a4086476
13167baa621
14b95a54ca
15730439c0
hex4956731a

1230402330 has 96 divisors (see below), whose sum is σ = 3267433728. Its totient is φ = 321148800.

The previous prime is 1230402317. The next prime is 1230402337. The reversal of 1230402330 is 332040321.

1230402330 is a `hidden beast` number, since 1 + 230 + 402 + 3 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1230402337) 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, 1487377 + ... + 1488203.

It is an arithmetic number, because the mean of its divisors is an integer number (34035768).

Almost surely, 21230402330 is an apocalyptic number.

1230402330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1230402330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1633716864).

1230402330 is an abundant number, since it is smaller than the sum of its proper divisors (2037031398).

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

1230402330 is a wasteful number, since it uses less digits than its factorization.

1230402330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172 (or 1169 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 1230402330 is about 35077.0912420058. The cubic root of 1230402330 is about 1071.5580788977.

Adding to 1230402330 its reverse (332040321), we get a palindrome (1562442651).

The spelling of 1230402330 in words is "one billion, two hundred thirty million, four hundred two thousand, three hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 61 90 122 183 271 305 366 542 549 610 813 827 915 1098 1355 1626 1654 1830 2439 2481 2710 2745 4065 4135 4878 4962 5490 7443 8130 8270 12195 12405 14886 16531 24390 24810 33062 37215 49593 50447 74430 82655 99186 100894 148779 151341 165310 224117 247965 252235 297558 302682 448234 454023 495930 504470 672351 743895 756705 908046 1120585 1344702 1487790 1513410 2017053 2241170 2270115 3361755 4034106 4540230 6723510 10085265 13671137 20170530 27342274 41013411 68355685 82026822 123040233 136711370 205067055 246080466 410134110 615201165 1230402330