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80842130 = 258084213
BaseRepresentation
bin1001101000110…
…00110110010010
312122010012112222
410310120312102
5131143422010
612004421042
72001101225
oct464306622
9178105488
1080842130
11416a6986
12230a7782
13139967a5
14aa455bc
15716d355
hex4d18d92

80842130 has 8 divisors (see below), whose sum is σ = 145515852. Its totient is φ = 32336848.

The previous prime is 80842109. The next prime is 80842147. The reversal of 80842130 is 3124808.

It can be written as a sum of positive squares in 2 ways, for example, as 77035729 + 3806401 = 8777^2 + 1951^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 80842130.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4042097 + ... + 4042116.

Almost surely, 280842130 is an apocalyptic number.

80842130 is a deficient number, since it is larger than the sum of its proper divisors (64673722).

80842130 is a wasteful number, since it uses less digits than its factorization.

80842130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8084220.

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

The square root of 80842130 is about 8991.2251667946. The cubic root of 80842130 is about 432.3935920524.

Adding to 80842130 its reverse (3124808), we get a palindrome (83966938).

The spelling of 80842130 in words is "eighty million, eight hundred forty-two thousand, one hundred thirty".

Divisors: 1 2 5 10 8084213 16168426 40421065 80842130