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1230088530 = 2351123433769
BaseRepresentation
bin100100101010001…
…1010100101010010
310011201121222020110
41021110122211102
510004400313110
6322021022150
742324402636
oct11124324522
93151558213
101230088530
115813977a0
122a3b54956
13167aca848
14b9522dc6
1572ed0a20
hex4951a952

1230088530 has 128 divisors (see below), whose sum is σ = 3439687680. Its totient is φ = 278530560.

The previous prime is 1230088513. The next prime is 1230088543. The reversal of 1230088530 is 358800321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 324486 + ... + 328254.

It is an arithmetic number, because the mean of its divisors is an integer number (26872560).

Almost surely, 21230088530 is an apocalyptic number.

1230088530 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 1230088530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1719843840).

1230088530 is an abundant number, since it is smaller than the sum of its proper divisors (2209599150).

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

1230088530 is a wasteful number, since it uses less digits than its factorization.

1230088530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3856.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1230088530 is about 35072.6179519009. The cubic root of 1230088530 is about 1071.4669749536.

Adding to 1230088530 its reverse (358800321), we get a palindrome (1588888851).

The spelling of 1230088530 in words is "one billion, two hundred thirty million, eighty-eight thousand, five hundred thirty".

Divisors: 1 2 3 5 6 10 11 15 22 23 30 33 43 46 55 66 69 86 110 115 129 138 165 215 230 253 258 330 345 430 473 506 645 690 759 946 989 1265 1290 1419 1518 1978 2365 2530 2838 2967 3769 3795 4730 4945 5934 7095 7538 7590 9890 10879 11307 14190 14835 18845 21758 22614 29670 32637 37690 41459 54395 56535 65274 82918 86687 108790 113070 124377 162067 163185 173374 207295 248754 260061 324134 326370 414590 433435 486201 520122 621885 810335 866870 953557 972402 1243770 1300305 1620670 1782737 1907114 2431005 2600610 2860671 3565474 3727541 4767785 4862010 5348211 5721342 7455082 8913685 9535570 10696422 11182623 14303355 17827370 18637705 22365246 26741055 28606710 37275410 41002951 53482110 55913115 82005902 111826230 123008853 205014755 246017706 410029510 615044265 1230088530