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30144334 = 2111370197
BaseRepresentation
bin111001011111…
…1011101001110
32002201111020211
41302333131032
530204104314
62554033034
7514136233
oct162773516
962644224
1030144334
1116019980
12a11877a
1363258ac
14400978a
1529a69c4
hex1cbf74e

30144334 has 8 divisors (see below), whose sum is σ = 49327128. Its totient is φ = 13701960.

The previous prime is 30144319. The next prime is 30144341. The reversal of 30144334 is 43344103.

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 (22), and also a Moran number because the ratio is a prime number: 1370197 = 30144334 / (3 + 0 + 1 + 4 + 4 + 3 + 3 + 4).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685077 + ... + 685120.

It is an arithmetic number, because the mean of its divisors is an integer number (6165891).

Almost surely, 230144334 is an apocalyptic number.

30144334 is a deficient number, since it is larger than the sum of its proper divisors (19182794).

30144334 is a wasteful number, since it uses less digits than its factorization.

30144334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370210.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 30144334 is about 5490.3855966589. The cubic root of 30144334 is about 311.2207639082.

Adding to 30144334 its reverse (43344103), we get a palindrome (73488437).

The spelling of 30144334 in words is "thirty million, one hundred forty-four thousand, three hundred thirty-four".

Divisors: 1 2 11 22 1370197 2740394 15072167 30144334