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1306144230 = 235671574139
BaseRepresentation
bin100110111011010…
…0010110111100110
310101000202000001020
41031312202313212
510133333103410
6333335112010
744240020446
oct11566426746
93330660036
101306144230
11610314546
12305512606
1317a7a9811
14c5680126
1579a05a70
hex4dda2de6

1306144230 has 64 divisors (see below), whose sum is σ = 3202571520. Its totient is φ = 340838784.

The previous prime is 1306144223. The next prime is 1306144237. The reversal of 1306144230 is 324416031.

It is an interprime number because it is at equal distance from previous prime (1306144223) and next prime (1306144237).

It is a self number, because there is not a number n which added to its sum of digits gives 1306144230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306144237) 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, 313501 + ... + 317639.

It is an arithmetic number, because the mean of its divisors is an integer number (50040180).

Almost surely, 21306144230 is an apocalyptic number.

1306144230 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 1306144230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1601285760).

1306144230 is an abundant number, since it is smaller than the sum of its proper divisors (1896427290).

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

1306144230 is a wasteful number, since it uses less digits than its factorization.

1306144230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4373.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 1306144230 is about 36140.6174546036. The cubic root of 1306144230 is about 1093.1096092113.

It can be divided in two parts, 13061 and 44230, that added together give a triangular number (57291 = T338).

The spelling of 1306144230 in words is "one billion, three hundred six million, one hundred forty-four thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 67 134 157 201 314 335 402 471 670 785 942 1005 1570 2010 2355 4139 4710 8278 10519 12417 20695 21038 24834 31557 41390 52595 62085 63114 105190 124170 157785 277313 315570 554626 649823 831939 1299646 1386565 1663878 1949469 2773130 3249115 3898938 4159695 6498230 8319390 9747345 19494690 43538141 87076282 130614423 217690705 261228846 435381410 653072115 1306144230