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30144853 = 831792029
BaseRepresentation
bin111001011111…
…1100101010101
32002201111222001
41302333211111
530204113403
62554035301
7514140604
oct162774525
962644861
1030144853
111601a302
12a118b31
136325bbb
144009a3b
1529a6c1d
hex1cbf955

30144853 has 8 divisors (see below), whose sum is σ = 30693600. Its totient is φ = 29600688.

The previous prime is 30144827. The next prime is 30144857. The reversal of 30144853 is 35844103.

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

It is a cyclic number.

It is not a de Polignac number, because 30144853 - 29 = 30144341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30144857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13843 + ... + 15871.

It is an arithmetic number, because the mean of its divisors is an integer number (3836700).

Almost surely, 230144853 is an apocalyptic number.

It is an amenable number.

30144853 is a deficient number, since it is larger than the sum of its proper divisors (548747).

30144853 is a wasteful number, since it uses less digits than its factorization.

30144853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 30144853 is about 5490.4328608954. The cubic root of 30144853 is about 311.2225500111. Note that the first 3 decimals are identical.

Adding to 30144853 its reverse (35844103), we get a palindrome (65988956).

It can be divided in two parts, 301 and 44853, that added together give a palindrome (45154).

The spelling of 30144853 in words is "thirty million, one hundred forty-four thousand, eight hundred fifty-three".

Divisors: 1 83 179 2029 14857 168407 363191 30144853