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230011020 = 223251775167
BaseRepresentation
bin11011011010110…
…11000010001100
3121000210202210200
431231123002030
5432340323040
634453533500
75462030031
oct1555330214
9530722720
10230011020
11108920758
1265044290
13388642c5
1422795388
15152d6630
hexdb5b08c

230011020 has 72 divisors (see below), whose sum is σ = 738751104. Its totient is φ = 57727488.

The previous prime is 230011013. The next prime is 230011021. The reversal of 230011020 is 20110032.

It is a happy number.

230011020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 230010993 and 230011011.

It is not an unprimeable number, because it can be changed into a prime (230011021) 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, 34524 + ... + 40643.

It is an arithmetic number, because the mean of its divisors is an integer number (10260432).

Almost surely, 2230011020 is an apocalyptic number.

230011020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230011020 is an abundant number, since it is smaller than the sum of its proper divisors (508740084).

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

230011020 is a wasteful number, since it uses less digits than its factorization.

230011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75199 (or 75194 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 230011020 is about 15166.1142023921. The cubic root of 230011020 is about 612.7023526884.

Adding to 230011020 its reverse (20110032), we get a palindrome (250121052).

The spelling of 230011020 in words is "two hundred thirty million, eleven thousand, twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 17 18 20 30 34 36 45 51 60 68 85 90 102 153 170 180 204 255 306 340 510 612 765 1020 1530 3060 75167 150334 225501 300668 375835 451002 676503 751670 902004 1127505 1277839 1353006 1503340 2255010 2555678 2706012 3382515 3833517 4510020 5111356 6389195 6765030 7667034 11500551 12778390 13530060 15334068 19167585 23001102 25556780 38335170 46002204 57502755 76670340 115005510 230011020