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30983412 = 2232581951
BaseRepresentation
bin111011000110…
…0010011110100
32011022010020210
41312030103310
530412432122
63024025420
7524232435
oct166142364
964263223
1030983412
1116542329
12a462270
13655a7a5
14418748c
152ac040c
hex1d8c4f4

30983412 has 12 divisors (see below), whose sum is σ = 72294656. Its totient is φ = 10327800.

The previous prime is 30983383. The next prime is 30983419. The reversal of 30983412 is 21438903.

It is a tau number, because it is divible by the number of its divisors (12).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 30983412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30983419) 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 3 ways as a sum of consecutive naturals, for example, 1290964 + ... + 1290987.

Almost surely, 230983412 is an apocalyptic number.

It is an amenable number.

30983412 is an abundant number, since it is smaller than the sum of its proper divisors (41311244).

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

30983412 is a wasteful number, since it uses less digits than its factorization.

30983412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581958 (or 2581956 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 30983412 is about 5566.2745171254. The cubic root of 30983412 is about 314.0820238203.

The spelling of 30983412 in words is "thirty million, nine hundred eighty-three thousand, four hundred twelve".

Divisors: 1 2 3 4 6 12 2581951 5163902 7745853 10327804 15491706 30983412