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80681298 = 2313446883
BaseRepresentation
bin1001100111100…
…01100101010010
312121211000221020
410303301211102
5131123300143
612001140310
71666531305
oct463614522
9177730836
1080681298
11415a7065
122302a696
131393b519
14aa02b3c
15713a883
hex4cf1952

80681298 has 8 divisors (see below), whose sum is σ = 161362608. Its totient is φ = 26893764.

The previous prime is 80681297. The next prime is 80681311. The reversal of 80681298 is 89218608.

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

80681298 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (80681291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6723436 + ... + 6723447.

It is an arithmetic number, because the mean of its divisors is an integer number (20170326).

Almost surely, 280681298 is an apocalyptic number.

80681298 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80681298 is a wasteful number, since it uses less digits than its factorization.

80681298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13446888.

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 80681298 is about 8982.2768828399. The cubic root of 80681298 is about 432.1066587637.

The spelling of 80681298 in words is "eighty million, six hundred eighty-one thousand, two hundred ninety-eight".

Divisors: 1 2 3 6 13446883 26893766 40340649 80681298