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1305230 = 25130523
BaseRepresentation
bin100111110101010001110
32110022102212
410332222032
5313231410
643550422
714044223
oct4765216
92408385
101305230
11811703
1252b412
13369134
1425d94a
151abb05
hex13ea8e

1305230 has 8 divisors (see below), whose sum is σ = 2349432. Its totient is φ = 522088.

The previous prime is 1305229. The next prime is 1305233. The reversal of 1305230 is 325031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65252 + ... + 65271.

It is an arithmetic number, because the mean of its divisors is an integer number (293679).

21305230 is an apocalyptic number.

1305230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1305230 is a deficient number, since it is larger than the sum of its proper divisors (1044202).

1305230 is a wasteful number, since it uses less digits than its factorization.

1305230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130530.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 1305230 is about 1142.4666297096. The cubic root of 1305230 is about 109.2854510571.

The spelling of 1305230 in words is "one million, three hundred five thousand, two hundred thirty".

Divisors: 1 2 5 10 130523 261046 652615 1305230