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1275250230 = 23456532411
BaseRepresentation
bin100110000000010…
…1100011000110110
310021212121102110000
41030000230120312
510102431001410
6330313012130
743413306462
oct11400543066
93255542400
101275250230
115a4933411
122b70b4046
13174280947
14c151b4a2
1576e51dc0
hex4c02c636

1275250230 has 80 divisors (see below), whose sum is σ = 3435681744. Its totient is φ = 339405120.

The previous prime is 1275250219. The next prime is 1275250231. The reversal of 1275250230 is 320525721.

1275250230 is a `hidden beast` number, since 127 + 5 + 2 + 502 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1275250194 and 1275250203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275250231) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 527725 + ... + 530135.

Almost surely, 21275250230 is an apocalyptic number.

1275250230 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 1275250230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1717840872).

1275250230 is an abundant number, since it is smaller than the sum of its proper divisors (2160431514).

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

1275250230 is a wasteful number, since it uses less digits than its factorization.

1275250230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3083 (or 3074 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 1275250230 is about 35710.6458916665. The cubic root of 1275250230 is about 1084.4223758310.

Adding to 1275250230 its reverse (320525721), we get a palindrome (1595775951).

The spelling of 1275250230 in words is "one billion, two hundred seventy-five million, two hundred fifty thousand, two hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 81 90 135 162 270 405 653 810 1306 1959 2411 3265 3918 4822 5877 6530 7233 9795 11754 12055 14466 17631 19590 21699 24110 29385 35262 36165 43398 52893 58770 65097 72330 88155 105786 108495 130194 176310 195291 216990 264465 325485 390582 528930 650970 976455 1574383 1952910 3148766 4723149 7871915 9446298 14169447 15743830 23615745 28338894 42508341 47231490 70847235 85016682 127525023 141694470 212541705 255050046 425083410 637625115 1275250230