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30423514 = 2112125717
BaseRepresentation
bin111010000001…
…1100111011010
32010020200012211
41310003213122
530242023024
63004025334
7516411202
oct164034732
963220184
1030423514
111619a700
12a23224a
1363c29a4
14407d402
152a0e594
hex1d039da

30423514 has 12 divisors (see below), whose sum is σ = 50161482. Its totient is φ = 13828760.

The previous prime is 30423511. The next prime is 30423521. The reversal of 30423514 is 41532403.

It can be written as a sum of positive squares in only one way, i.e., 24830289 + 5593225 = 4983^2 + 2365^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (30423511) 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 5 ways as a sum of consecutive naturals, for example, 62617 + ... + 63100.

Almost surely, 230423514 is an apocalyptic number.

30423514 is a deficient number, since it is larger than the sum of its proper divisors (19737968).

30423514 is a wasteful number, since it uses less digits than its factorization.

30423514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125741 (or 125730 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 30423514 is about 5515.7514447263. The cubic root of 30423514 is about 312.1785973411.

Adding to 30423514 its reverse (41532403), we get a palindrome (71955917).

Subtracting 30423514 from its reverse (41532403), we obtain a square (11108889 = 33332).

It can be divided in two parts, 3042 and 3514, that added together give a palindrome (6556).

The spelling of 30423514 in words is "thirty million, four hundred twenty-three thousand, five hundred fourteen".

Divisors: 1 2 11 22 121 242 125717 251434 1382887 2765774 15211757 30423514