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230021424 = 24331731321
BaseRepresentation
bin11011011010111…
…01100100110000
3121000211022002000
431231131210300
5432341141144
634454054000
75462102253
oct1555354460
9530738060
10230021424
11108928556
126504a300
1338868c69
142279909a
15152d9769
hexdb5d930

230021424 has 80 divisors (see below), whose sum is σ = 699107040. Its totient is φ = 72161280.

The previous prime is 230021419. The next prime is 230021437. The reversal of 230021424 is 424120032.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 230021397 and 230021406.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8317 + ... + 23004.

It is an arithmetic number, because the mean of its divisors is an integer number (8738838).

Almost surely, 2230021424 is an apocalyptic number.

230021424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

230021424 is an abundant number, since it is smaller than the sum of its proper divisors (469085616).

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

230021424 is a wasteful number, since it uses less digits than its factorization.

230021424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31355 (or 31343 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 230021424 is about 15166.4572000187. The cubic root of 230021424 is about 612.7115905924.

Adding to 230021424 its reverse (424120032), we get a palindrome (654141456).

The spelling of 230021424 in words is "two hundred thirty million, twenty-one thousand, four hundred twenty-four".

Divisors: 1 2 3 4 6 8 9 12 16 17 18 24 27 34 36 48 51 54 68 72 102 108 136 144 153 204 216 272 306 408 432 459 612 816 918 1224 1836 2448 3672 7344 31321 62642 93963 125284 187926 250568 281889 375852 501136 532457 563778 751704 845667 1064914 1127556 1503408 1597371 1691334 2129828 2255112 3194742 3382668 4259656 4510224 4792113 6389484 6765336 8519312 9584226 12778968 13530672 14376339 19168452 25557936 28752678 38336904 57505356 76673808 115010712 230021424