Search a number
-
+
30848013 = 337179601
BaseRepresentation
bin111010110101…
…1010000001101
32011001020112000
41311223100031
530344114023
63021102513
7523126620
oct165532015
964036460
1030848013
111645a629
12a3b7a39
136510c81
14414ddb7
152a95243
hex1d6b40d

30848013 has 32 divisors (see below), whose sum is σ = 55307520. Its totient is φ = 16588800.

The previous prime is 30848003. The next prime is 30848017. The reversal of 30848013 is 31084803.

It is not a de Polignac number, because 30848013 - 24 = 30847997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30848017) 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 31 ways as a sum of consecutive naturals, for example, 1588 + ... + 8013.

It is an arithmetic number, because the mean of its divisors is an integer number (1728360).

Almost surely, 230848013 is an apocalyptic number.

It is an amenable number.

30848013 is a deficient number, since it is larger than the sum of its proper divisors (24459507).

30848013 is a wasteful number, since it uses less digits than its factorization.

30848013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9634 (or 9628 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 30848013 is about 5554.0987567741. The cubic root of 30848013 is about 313.6238378912.

The spelling of 30848013 in words is "thirty million, eight hundred forty-eight thousand, thirteen".

Divisors: 1 3 7 9 17 21 27 51 63 119 153 189 357 459 1071 3213 9601 28803 67207 86409 163217 201621 259227 489651 604863 1142519 1468953 1814589 3427557 4406859 10282671 30848013