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23012230 = 2519313907
BaseRepresentation
bin101011111001…
…0001110000110
31121022010211211
41113302032012
521342342410
62141122034
7366413023
oct127621606
947263754
1023012230
1111a9847a
12785931a
1349c9507
1430b054a
15204868a
hex15f2386

23012230 has 32 divisors (see below), whose sum is σ = 45020160. Its totient is φ = 8436960.

The previous prime is 23012221. The next prime is 23012233. The reversal of 23012230 is 3221032.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 23012230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23012233) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3937 + ... + 7843.

It is an arithmetic number, because the mean of its divisors is an integer number (1406880).

Almost surely, 223012230 is an apocalyptic number.

23012230 is a deficient number, since it is larger than the sum of its proper divisors (22007930).

23012230 is a wasteful number, since it uses less digits than its factorization.

23012230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3964.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 23012230 is about 4797.1064194992. The cubic root of 23012230 is about 284.4370955653.

Adding to 23012230 its reverse (3221032), we get a palindrome (26233262).

The spelling of 23012230 in words is "twenty-three million, twelve thousand, two hundred thirty".

Divisors: 1 2 5 10 19 31 38 62 95 155 190 310 589 1178 2945 3907 5890 7814 19535 39070 74233 121117 148466 242234 371165 605585 742330 1211170 2301223 4602446 11506115 23012230