Search a number
-
+
30068845 = 522926261
BaseRepresentation
bin111001010110…
…1000001101101
32002120122200221
41302231001231
530144200340
62552251341
7513403162
oct162550155
962518627
1030068845
1115a78194
12a0a0b51
1362ca421
143dca069
15298e44a
hex1cad06d

30068845 has 8 divisors (see below), whose sum is σ = 36241560. Its totient is φ = 23949120.

The previous prime is 30068833. The next prime is 30068873. The reversal of 30068845 is 54886003.

It can be written as a sum of positive squares in 4 ways, for example, as 1542564 + 28526281 = 1242^2 + 5341^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30068845 - 29 = 30068333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30068845.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11986 + ... + 14275.

It is an arithmetic number, because the mean of its divisors is an integer number (4530195).

Almost surely, 230068845 is an apocalyptic number.

It is an amenable number.

30068845 is a deficient number, since it is larger than the sum of its proper divisors (6172715).

30068845 is a wasteful number, since it uses less digits than its factorization.

30068845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26495.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 30068845 is about 5483.5066335330. The cubic root of 30068845 is about 310.9607550345.

The spelling of 30068845 in words is "thirty million, sixty-eight thousand, eight hundred forty-five".

Divisors: 1 5 229 1145 26261 131305 6013769 30068845