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30670012 = 2271791367
BaseRepresentation
bin111010011111…
…1110010111100
32010201012100101
41310333302330
530322420022
63013210444
7521455642
oct164776274
963635311
1030670012
111634891a
12a330a24
13647ac49
144105192
152a5c627
hex1d3fcbc

30670012 has 24 divisors (see below), whose sum is σ = 55157760. Its totient is φ = 14916720.

The previous prime is 30669997. The next prime is 30670019. The reversal of 30670012 is 21007603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30670019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21753 + ... + 23119.

It is an arithmetic number, because the mean of its divisors is an integer number (2298240).

Almost surely, 230670012 is an apocalyptic number.

It is an amenable number.

30670012 is a deficient number, since it is larger than the sum of its proper divisors (24487748).

30670012 is a wasteful number, since it uses less digits than its factorization.

30670012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521 (or 1519 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 30670012 is about 5538.0512818138. The cubic root of 30670012 is about 313.0194437186.

Adding to 30670012 its reverse (21007603), we get a palindrome (51677615).

The spelling of 30670012 in words is "thirty million, six hundred seventy thousand, twelve".

Divisors: 1 2 4 71 79 142 158 284 316 1367 2734 5468 5609 11218 22436 97057 107993 194114 215986 388228 431972 7667503 15335006 30670012