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980161 = 71310771
BaseRepresentation
bin11101111010011000001
31211210112021
43233103001
5222331121
633001441
711221420
oct3572301
91753467
10980161
1160a456
123b3281
132841a0
141b72b7
15145641
hexef4c1

980161 has 8 divisors (see below), whose sum is σ = 1206464. Its totient is φ = 775440.

The previous prime is 980159. The next prime is 980173. The reversal of 980161 is 161089.

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 980161 - 21 = 980159 is a prime.

980161 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (980131) 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 7 ways as a sum of consecutive naturals, for example, 5295 + ... + 5476.

It is an arithmetic number, because the mean of its divisors is an integer number (150808).

2980161 is an apocalyptic number.

980161 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

980161 is a deficient number, since it is larger than the sum of its proper divisors (226303).

980161 is a wasteful number, since it uses less digits than its factorization.

980161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10791.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 980161 is about 990.0308076015. The cubic root of 980161 is about 99.3342779765.

The spelling of 980161 in words is "nine hundred eighty thousand, one hundred sixty-one".

Divisors: 1 7 13 91 10771 75397 140023 980161