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23971230 = 2325833209
BaseRepresentation
bin101101101110…
…0010110011110
31200002212100100
41123130112132
522114034410
62213441530
7410515653
oct133342636
950085310
1023971230
1112592a38
1280402a6
134c73b7a
14327dc2a
1521878c0
hex16dc59e

23971230 has 48 divisors (see below), whose sum is σ = 63095760. Its totient is φ = 6313344.

The previous prime is 23971219. The next prime is 23971237. The reversal of 23971230 is 3217932.

It is a junction number, because it is equal to n+sod(n) for n = 23971194 and 23971203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23971237) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5866 + ... + 9074.

It is an arithmetic number, because the mean of its divisors is an integer number (1314495).

Almost surely, 223971230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23971230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31547880).

23971230 is an abundant number, since it is smaller than the sum of its proper divisors (39124530).

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

23971230 is a wasteful number, since it uses less digits than its factorization.

23971230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3305 (or 3302 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 23971230 is about 4896.0422792292. The cubic root of 23971230 is about 288.3346081967.

The spelling of 23971230 in words is "twenty-three million, nine hundred seventy-one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 83 90 166 249 415 498 747 830 1245 1494 2490 3209 3735 6418 7470 9627 16045 19254 28881 32090 48135 57762 96270 144405 266347 288810 532694 799041 1331735 1598082 2397123 2663470 3995205 4794246 7990410 11985615 23971230