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30011412 = 22319235997
BaseRepresentation
bin111001001111…
…1000000010100
32002110201220210
41302133000110
530140331122
62551125420
7513043554
oct162370024
962421823
1030011412
1115a39022
12a073870
1362aa242
143db3164
15297c40c
hex1c9f014

30011412 has 96 divisors (see below), whose sum is σ = 79027200. Its totient is φ = 8819712.

The previous prime is 30011407. The next prime is 30011417. The reversal of 30011412 is 21411003.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30011407) and next prime (30011417).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30011417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 309348 + ... + 309444.

It is an arithmetic number, because the mean of its divisors is an integer number (823200).

Almost surely, 230011412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30011412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39513600).

30011412 is an abundant number, since it is smaller than the sum of its proper divisors (49015788).

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

30011412 is a wasteful number, since it uses less digits than its factorization.

30011412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 30011412 is about 5478.2672443027. The cubic root of 30011412 is about 310.7626453087.

Adding to 30011412 its reverse (21411003), we get a palindrome (51422415).

The spelling of 30011412 in words is "thirty million, eleven thousand, four hundred twelve".

Divisors: 1 2 3 4 6 12 19 23 38 46 57 59 69 76 92 97 114 118 138 177 194 228 236 276 291 354 388 437 582 708 874 1121 1164 1311 1357 1748 1843 2231 2242 2622 2714 3363 3686 4071 4462 4484 5244 5428 5529 5723 6693 6726 7372 8142 8924 11058 11446 13386 13452 16284 17169 22116 22892 25783 26772 34338 42389 51566 68676 77349 84778 103132 108737 127167 131629 154698 169556 217474 254334 263258 309396 326211 394887 434948 508668 526516 652422 789774 1304844 1579548 2500951 5001902 7502853 10003804 15005706 30011412