Search a number
-
+
30144235 = 5111393943
BaseRepresentation
bin111001011111…
…1011011101011
32002201111010011
41302333123223
530204103420
62554032351
7514136032
oct162773353
962644104
1030144235
11160198a0
12a1186b7
136325834
144009719
1529a695a
hex1cbf6eb

30144235 has 16 divisors (see below), whose sum is σ = 39755520. Its totient is φ = 21759840.

The previous prime is 30144229. The next prime is 30144239. The reversal of 30144235 is 53244103.

It is not a de Polignac number, because 30144235 - 29 = 30143723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30144239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5674 + ... + 9616.

It is an arithmetic number, because the mean of its divisors is an integer number (2484720).

Almost surely, 230144235 is an apocalyptic number.

30144235 is a deficient number, since it is larger than the sum of its proper divisors (9611285).

30144235 is a wasteful number, since it uses less digits than its factorization.

30144235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4098.

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

The square root of 30144235 is about 5490.3765808913. The cubic root of 30144235 is about 311.2204232042.

Adding to 30144235 its reverse (53244103), we get a palindrome (83388338).

The spelling of 30144235 in words is "thirty million, one hundred forty-four thousand, two hundred thirty-five".

Divisors: 1 5 11 55 139 695 1529 3943 7645 19715 43373 216865 548077 2740385 6028847 30144235