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1230322044 = 2237591631523
BaseRepresentation
bin100100101010101…
…0011100101111100
310011202001211120010
41021111103211330
510004430301134
6322030023220
742326364510
oct11125234574
93152054503
101230322044
11581537186
122a4047b10
13167b7cc13
14b9584140
1573029ce9
hex4955397c

1230322044 has 96 divisors (see below), whose sum is σ = 3359139840. Its totient is φ = 343217088.

The previous prime is 1230322043. The next prime is 1230322073. The reversal of 1230322044 is 4402230321.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1230322044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230322043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 807067 + ... + 808589.

It is an arithmetic number, because the mean of its divisors is an integer number (34991040).

Almost surely, 21230322044 is an apocalyptic number.

1230322044 is a gapful number since it is divisible by the number (14) 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 1230322044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1679569920).

1230322044 is an abundant number, since it is smaller than the sum of its proper divisors (2128817796).

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

1230322044 is a wasteful number, since it uses less digits than its factorization.

1230322044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759 (or 1757 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1230322044 is about 35075.9468011913. The cubic root of 1230322044 is about 1071.5347713499.

Adding to 1230322044 its reverse (4402230321), we get a palindrome (5632552365).

The spelling of 1230322044 in words is "one billion, two hundred thirty million, three hundred twenty-two thousand, forty-four".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 59 84 118 163 177 236 326 354 413 489 652 708 826 978 1141 1239 1523 1652 1956 2282 2478 3046 3423 4564 4569 4956 6092 6846 9138 9617 10661 13692 18276 19234 21322 28851 31983 38468 42644 57702 63966 67319 89857 115404 127932 134638 179714 201957 248249 269276 269571 359428 403914 496498 539142 628999 744747 807828 992996 1078284 1257998 1489494 1737743 1886997 2515996 2978988 3475486 3773994 5213229 6950972 7547988 10426458 14646691 20852916 29293382 43940073 58586764 87880146 102526837 175760292 205053674 307580511 410107348 615161022 1230322044