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30484142 = 2131172467
BaseRepresentation
bin111010001001…
…0011010101110
32010100202101022
41310102122232
530300443032
63005214142
7520053023
oct164223256
963322338
1030484142
1116231207
12a261352
136414470
14409754a
152a22512
hex1d126ae

30484142 has 8 divisors (see below), whose sum is σ = 49243656. Its totient is φ = 14069592.

The previous prime is 30484141. The next prime is 30484163. The reversal of 30484142 is 24148403.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 1172467 = 30484142 / (3 + 0 + 4 + 8 + 4 + 1 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30484141) 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, 586208 + ... + 586259.

It is an arithmetic number, because the mean of its divisors is an integer number (6155457).

Almost surely, 230484142 is an apocalyptic number.

30484142 is a deficient number, since it is larger than the sum of its proper divisors (18759514).

30484142 is a wasteful number, since it uses less digits than its factorization.

30484142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172482.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 30484142 is about 5521.2446060648. The cubic root of 30484142 is about 312.3858296535.

The spelling of 30484142 in words is "thirty million, four hundred eighty-four thousand, one hundred forty-two".

Divisors: 1 2 13 26 1172467 2344934 15242071 30484142