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30230190 = 2325383877
BaseRepresentation
bin111001101010…
…0011010101110
32002212212000200
41303110122232
530214331230
62555534330
7514644444
oct163243256
962785020
1030230190
1116078431
12a15a3a6
1363559b3
14402cb94
1529c2160
hex1cd46ae

30230190 has 48 divisors (see below), whose sum is σ = 78893568. Its totient is φ = 8031168.

The previous prime is 30230183. The next prime is 30230203. The reversal of 30230190 is 9103203.

It is a super-2 number, since 2×302301902 = 1827728774872200, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34032 + ... + 34908.

It is an arithmetic number, because the mean of its divisors is an integer number (1643616).

Almost surely, 230230190 is an apocalyptic number.

30230190 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30230190 is an abundant number, since it is smaller than the sum of its proper divisors (48663378).

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

30230190 is a wasteful number, since it uses less digits than its factorization.

30230190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273 (or 1270 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 30230190 is about 5498.1987959695. The cubic root of 30230190 is about 311.5159530712.

Adding to 30230190 its reverse (9103203), we get a palindrome (39333393).

The spelling of 30230190 in words is "thirty million, two hundred thirty thousand, one hundred ninety".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 383 766 877 1149 1754 1915 2298 2631 3447 3830 4385 5262 5745 6894 7893 8770 11490 13155 15786 17235 26310 34470 39465 78930 335891 671782 1007673 1679455 2015346 3023019 3358910 5038365 6046038 10076730 15115095 30230190