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8083421 = 71257443
BaseRepresentation
bin11110110101011111011101
3120012200100222
4132311133131
54032132141
6445131125
7125464553
oct36653735
916180328
108083421
114621215
122859aa5
1318a03b8
141105bd3
15a9a14b
hex7b57dd

8083421 has 8 divisors (see below), whose sum is σ = 8247744. Its totient is φ = 7920640.

The previous prime is 8083409. The next prime is 8083447. The reversal of 8083421 is 1243808.

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 8083421 - 26 = 8083357 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 (8083451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18026 + ... + 18468.

It is an arithmetic number, because the mean of its divisors is an integer number (1030968).

Almost surely, 28083421 is an apocalyptic number.

It is an amenable number.

8083421 is a deficient number, since it is larger than the sum of its proper divisors (164323).

8083421 is a wasteful number, since it uses less digits than its factorization.

8083421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 8083421 is about 2843.1357688299. The cubic root of 8083421 is about 200.6927725602.

The spelling of 8083421 in words is "eight million, eighty-three thousand, four hundred twenty-one".

Divisors: 1 71 257 443 18247 31453 113851 8083421