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30671169 = 343733257
BaseRepresentation
bin111010100000…
…0000101000001
32010201020221020
41311000011001
530322434134
63013220053
7521462214
oct165000501
963636836
1030671169
1116349781
12a331629
13647b629
14410577b
152a5cb49
hex1d40141

30671169 has 16 divisors (see below), whose sum is σ = 42432192. Its totient is φ = 19692288.

The previous prime is 30671143. The next prime is 30671177. The reversal of 30671169 is 96117603.

It is not a de Polignac number, because 30671169 - 27 = 30671041 is a prime.

It is a super-2 number, since 2×306711692 = 1881441215653122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30671189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7789 + ... + 11045.

It is an arithmetic number, because the mean of its divisors is an integer number (2652012).

Almost surely, 230671169 is an apocalyptic number.

It is an amenable number.

30671169 is a deficient number, since it is larger than the sum of its proper divisors (11761023).

30671169 is a wasteful number, since it uses less digits than its factorization.

30671169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3376.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 30671169 is about 5538.1557399553. The cubic root of 30671169 is about 313.0233797994.

The spelling of 30671169 in words is "thirty million, six hundred seventy-one thousand, one hundred sixty-nine".

Divisors: 1 3 43 73 129 219 3139 3257 9417 9771 140051 237761 420153 713283 10223723 30671169