Search a number
-
+
30270012 = 2233181371
BaseRepresentation
bin111001101111…
…0001000111100
32002221212122120
41303132020330
530222120022
63000442540
7515201523
oct163361074
962855576
1030270012
11160a5343
12a179450
13636ab66
14403d4ba
1529cdd5c
hex1cde23c

30270012 has 24 divisors (see below), whose sum is σ = 72909312. Its totient is φ = 9764400.

The previous prime is 30270011. The next prime is 30270029. The reversal of 30270012 is 21007203.

It is a junction number, because it is equal to n+sod(n) for n = 30269973 and 30270000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30270011) 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, 40314 + ... + 41057.

It is an arithmetic number, because the mean of its divisors is an integer number (3037888).

Almost surely, 230270012 is an apocalyptic number.

It is an amenable number.

30270012 is an abundant number, since it is smaller than the sum of its proper divisors (42639300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30270012 is a wasteful number, since it uses less digits than its factorization.

30270012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81409 (or 81407 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 30270012 is about 5501.8189719401. The cubic root of 30270012 is about 311.6526789201.

Adding to 30270012 its reverse (21007203), we get a palindrome (51277215).

The spelling of 30270012 in words is "thirty million, two hundred seventy thousand, twelve".

Divisors: 1 2 3 4 6 12 31 62 93 124 186 372 81371 162742 244113 325484 488226 976452 2522501 5045002 7567503 10090004 15135006 30270012