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20231230 = 253754679
BaseRepresentation
bin100110100101…
…1010000111110
31102001212000211
41031023100332
520134344410
62001343034
7333651115
oct115132076
942055024
1020231230
1110469028
126937a7a
134264756
142988c7c
151b9968a
hex134b43e

20231230 has 16 divisors (see below), whose sum is σ = 37401120. Its totient is φ = 7873632.

The previous prime is 20231203. The next prime is 20231243. The reversal of 20231230 is 3213202.

It is a happy number.

20231230 is nontrivially palindromic in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 20231230.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 26970 + ... + 27709.

It is an arithmetic number, because the mean of its divisors is an integer number (2337570).

Almost surely, 220231230 is an apocalyptic number.

20231230 is a deficient number, since it is larger than the sum of its proper divisors (17169890).

20231230 is a wasteful number, since it uses less digits than its factorization.

20231230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54723.

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

The square root of 20231230 is about 4497.9139609379. The cubic root of 20231230 is about 272.4838472035.

Adding to 20231230 its reverse (3213202), we get a palindrome (23444432).

The spelling of 20231230 in words is "twenty million, two hundred thirty-one thousand, two hundred thirty".

Divisors: 1 2 5 10 37 74 185 370 54679 109358 273395 546790 2023123 4046246 10115615 20231230