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30714445 = 511295441
BaseRepresentation
bin111010100101…
…0101001001101
32010210110022001
41311022221031
530330330240
63014152301
7522032326
oct165125115
963713261
1030714445
1116379243
12a352691
136495238
14411744d
152a6a89a
hex1d4aa4d

30714445 has 8 divisors (see below), whose sum is σ = 36896760. Its totient is φ = 24545280.

The previous prime is 30714421. The next prime is 30714449. The reversal of 30714445 is 54441703.

It can be written as a sum of positive squares in 4 ways, for example, as 1153476 + 29560969 = 1074^2 + 5437^2 .

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

It is not a de Polignac number, because 30714445 - 211 = 30712397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30714449) 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 7 ways as a sum of consecutive naturals, for example, 2925 + ... + 8365.

It is an arithmetic number, because the mean of its divisors is an integer number (4612095).

Almost surely, 230714445 is an apocalyptic number.

It is an amenable number.

30714445 is a deficient number, since it is larger than the sum of its proper divisors (6182315).

30714445 is a wasteful number, since it uses less digits than its factorization.

30714445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6575.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 30714445 is about 5542.0614395728. The cubic root of 30714445 is about 313.1705324735.

The spelling of 30714445 in words is "thirty million, seven hundred fourteen thousand, four hundred forty-five".

Divisors: 1 5 1129 5441 5645 27205 6142889 30714445