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30614161 = 171800833
BaseRepresentation
bin111010011001…
…0001010010001
32010121100201211
41310302022101
530314123121
63012100121
7521134054
oct164621221
963540654
1030614161
111630a966
12a304641
13645b6b6
1440cca9b
152a4ace1
hex1d32291

30614161 has 4 divisors (see below), whose sum is σ = 32415012. Its totient is φ = 28813312.

The previous prime is 30614153. The next prime is 30614189. The reversal of 30614161 is 16141603.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16141603 = 29556607.

It can be written as a sum of positive squares in 2 ways, for example, as 26204161 + 4410000 = 5119^2 + 2100^2 .

It is a cyclic number.

It is not a de Polignac number, because 30614161 - 23 = 30614153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30614261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 900400 + ... + 900433.

It is an arithmetic number, because the mean of its divisors is an integer number (8103753).

Almost surely, 230614161 is an apocalyptic number.

It is an amenable number.

30614161 is a deficient number, since it is larger than the sum of its proper divisors (1800851).

30614161 is a wasteful number, since it uses less digits than its factorization.

30614161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800850.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 30614161 is about 5533.0065064122. The cubic root of 30614161 is about 312.8293223744.

Adding to 30614161 its reverse (16141603), we get a palindrome (46755764).

The spelling of 30614161 in words is "thirty million, six hundred fourteen thousand, one hundred sixty-one".

Divisors: 1 17 1800833 30614161