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30860161 = 195093191
BaseRepresentation
bin111010110111…
…0001110000001
32011001212011221
41311232032001
530400011121
63021235041
7523210213
oct165561601
964055157
1030860161
1116468772
12a402a81
136516667
1441545b3
152a98b41
hex1d6e381

30860161 has 8 divisors (see below), whose sum is σ = 32558400. Its totient is φ = 29169360.

The previous prime is 30860149. The next prime is 30860171. The reversal of 30860161 is 16106803.

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

It is a cyclic number.

It is not a de Polignac number, because 30860161 - 25 = 30860129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30860131) 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 7 ways as a sum of consecutive naturals, for example, 8076 + ... + 11266.

It is an arithmetic number, because the mean of its divisors is an integer number (4069800).

Almost surely, 230860161 is an apocalyptic number.

It is an amenable number.

30860161 is a deficient number, since it is larger than the sum of its proper divisors (1698239).

30860161 is a wasteful number, since it uses less digits than its factorization.

30860161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3719.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 30860161 is about 5555.1922558990. The cubic root of 30860161 is about 313.6650010220.

Adding to 30860161 its reverse (16106803), we get a palindrome (46966964).

The spelling of 30860161 in words is "thirty million, eight hundred sixty thousand, one hundred sixty-one".

Divisors: 1 19 509 3191 9671 60629 1624219 30860161