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30054970 = 25111991373
BaseRepresentation
bin111001010100…
…1101000111010
32002112221200001
41302221220322
530143224340
62552103214
7513314551
oct162515072
962487601
1030054970
1115a68820
12a094b0a
1362c400a
143dc4d98
15298a29a
hex1ca9a3a

30054970 has 32 divisors (see below), whose sum is σ = 59356800. Its totient is φ = 10866240.

The previous prime is 30054943. The next prime is 30054971. The reversal of 30054970 is 7945003.

It is not an unprimeable number, because it can be changed into a prime (30054971) 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, 21204 + ... + 22576.

It is an arithmetic number, because the mean of its divisors is an integer number (1854900).

Almost surely, 230054970 is an apocalyptic number.

30054970 is a deficient number, since it is larger than the sum of its proper divisors (29301830).

30054970 is a wasteful number, since it uses less digits than its factorization.

30054970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 30054970 is about 5482.2413299672. The cubic root of 30054970 is about 310.9129176546.

Adding to 30054970 its reverse (7945003), we get a palindrome (37999973).

The spelling of 30054970 in words is "thirty million, fifty-four thousand, nine hundred seventy".

Divisors: 1 2 5 10 11 22 55 110 199 398 995 1373 1990 2189 2746 4378 6865 10945 13730 15103 21890 30206 75515 151030 273227 546454 1366135 2732270 3005497 6010994 15027485 30054970