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8081039 = 47171937
BaseRepresentation
bin11110110100111010001111
3120012120002202
4132310322033
54032043124
6445112115
7125454611
oct36647217
916176082
108081039
11461a44a
12285863b
13189c2a5
141104db1
15a995ae
hex7b4e8f

8081039 has 4 divisors (see below), whose sum is σ = 8253024. Its totient is φ = 7909056.

The previous prime is 8081011. The next prime is 8081041. The reversal of 8081039 is 9301808.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8081039 - 220 = 7032463 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 (8081009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85922 + ... + 86015.

It is an arithmetic number, because the mean of its divisors is an integer number (2063256).

Almost surely, 28081039 is an apocalyptic number.

8081039 is a deficient number, since it is larger than the sum of its proper divisors (171985).

8081039 is a wasteful number, since it uses less digits than its factorization.

8081039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171984.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 8081039 is about 2842.7168342978. The cubic root of 8081039 is about 200.6730574277.

The spelling of 8081039 in words is "eight million, eighty-one thousand, thirty-nine".

Divisors: 1 47 171937 8081039