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2678320293 = 31181161221
BaseRepresentation
bin1001111110100011…
…1110110010100101
320220122201202201220
42133220332302211
520441122222133
61121433410553
7123241226655
oct23750766245
96818652656
102678320293
111154929750
12628b69a59
13338b6590c
141b59cc365
1510a2015b3
hex9fa3eca5

2678320293 has 8 divisors (see below), whose sum is σ = 3895738656. Its totient is φ = 1623224400.

The previous prime is 2678320273. The next prime is 2678320339. The reversal of 2678320293 is 3920238762.

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

It is not a de Polignac number, because 2678320293 - 214 = 2678303909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2678320223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40580578 + ... + 40580643.

It is an arithmetic number, because the mean of its divisors is an integer number (486967332).

Almost surely, 22678320293 is an apocalyptic number.

It is an amenable number.

2678320293 is a deficient number, since it is larger than the sum of its proper divisors (1217418363).

2678320293 is a wasteful number, since it uses less digits than its factorization.

2678320293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81161235.

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 2678320293 is about 51752.4906936855. The cubic root of 2678320293 is about 1388.7396565223.

The spelling of 2678320293 in words is "two billion, six hundred seventy-eight million, three hundred twenty thousand, two hundred ninety-three".

Divisors: 1 3 11 33 81161221 243483663 892773431 2678320293