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30230220 = 22352691873
BaseRepresentation
bin111001101010…
…0011011001100
32002212212001210
41303110123030
530214331340
62555534420
7514644516
oct163243314
962785053
1030230220
1116078459
12a15a410
136355a07
14402cbb6
1529c2180
hex1cd46cc

30230220 has 48 divisors (see below), whose sum is σ = 85004640. Its totient is φ = 8027136.

The previous prime is 30230203. The next prime is 30230227. The reversal of 30230220 is 2203203.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 30230196 and 30230205.

It is not an unprimeable number, because it can be changed into a prime (30230227) 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, 15204 + ... + 17076.

It is an arithmetic number, because the mean of its divisors is an integer number (1770930).

Almost surely, 230230220 is an apocalyptic number.

30230220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30230220 is an abundant number, since it is smaller than the sum of its proper divisors (54774420).

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

30230220 is a wasteful number, since it uses less digits than its factorization.

30230220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154 (or 2152 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 30230220 is about 5498.2015241350. The cubic root of 30230220 is about 311.5160561191.

Adding to 30230220 its reverse (2203203), we get a palindrome (32433423).

The spelling of 30230220 in words is "thirty million, two hundred thirty thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 269 538 807 1076 1345 1614 1873 2690 3228 3746 4035 5380 5619 7492 8070 9365 11238 16140 18730 22476 28095 37460 56190 112380 503837 1007674 1511511 2015348 2519185 3023022 5038370 6046044 7557555 10076740 15115110 30230220