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30834197 = 113353773
BaseRepresentation
bin111010110011…
…1111000010101
32011000112120022
41311213320111
530343143242
63020514525
7523041422
oct165477025
964015508
1030834197
1116450209
12a3aba45
1365078b4
144148d49
152a910d2
hex1d67e15

30834197 has 8 divisors (see below), whose sum is σ = 31235544. Its totient is φ = 30435328.

The previous prime is 30834187. The next prime is 30834217. The reversal of 30834197 is 79143803.

It can be written as a sum of positive squares in 4 ways, for example, as 1825201 + 29008996 = 1351^2 + 5386^2 .

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 30834197 - 218 = 30572053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30834157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39503 + ... + 40275.

It is an arithmetic number, because the mean of its divisors is an integer number (3904443).

Almost surely, 230834197 is an apocalyptic number.

It is an amenable number.

30834197 is a deficient number, since it is larger than the sum of its proper divisors (401347).

30834197 is a wasteful number, since it uses less digits than its factorization.

30834197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 30834197 is about 5552.8548513355. The cubic root of 30834197 is about 313.5770096564.

The spelling of 30834197 in words is "thirty million, eight hundred thirty-four thousand, one hundred ninety-seven".

Divisors: 1 113 353 773 39889 87349 272869 30834197