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80426878 = 275744777
BaseRepresentation
bin1001100101100…
…11011101111110
312121100002221021
410302303131332
5131042130003
611551454354
71664421460
oct462633576
9177302837
1080426878
11414429a4
1222b273ba
131387c78c
14a978130
1570da2bd
hex4cb377e

80426878 has 8 divisors (see below), whose sum is σ = 137874672. Its totient is φ = 34468656.

The previous prime is 80426873. The next prime is 80426887. The reversal of 80426878 is 87862408.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80426873) 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 3 ways as a sum of consecutive naturals, for example, 2872375 + ... + 2872402.

It is an arithmetic number, because the mean of its divisors is an integer number (17234334).

Almost surely, 280426878 is an apocalyptic number.

80426878 is a deficient number, since it is larger than the sum of its proper divisors (57447794).

80426878 is a wasteful number, since it uses less digits than its factorization.

80426878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5744786.

The product of its (nonzero) digits is 172032, while the sum is 43.

The square root of 80426878 is about 8968.1033669333. The cubic root of 80426878 is about 431.6519795112.

The spelling of 80426878 in words is "eighty million, four hundred twenty-six thousand, eight hundred seventy-eight".

Divisors: 1 2 7 14 5744777 11489554 40213439 80426878