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7680049 = 131933061
BaseRepresentation
bin11101010011000000110001
3112110012001021
4131103000301
53431230144
6432335441
7122164546
oct35230061
915405037
107680049
114376153
1226a4581
13178b910
14103cbcd
15a1a884
hex753031

7680049 has 8 divisors (see below), whose sum is σ = 8316392. Its totient is φ = 7050240.

The previous prime is 7680037. The next prime is 7680059. The reversal of 7680049 is 9400867.

It can be written as a sum of positive squares in 4 ways, for example, as 883600 + 6796449 = 940^2 + 2607^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7680049 - 25 = 7680017 is a prime.

It is a Duffinian number.

7680049 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7679996 and 7680023.

It is not an unprimeable number, because it can be changed into a prime (7680019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 979 + ... + 4039.

It is an arithmetic number, because the mean of its divisors is an integer number (1039549).

Almost surely, 27680049 is an apocalyptic number.

It is an amenable number.

7680049 is a deficient number, since it is larger than the sum of its proper divisors (636343).

7680049 is a wasteful number, since it uses less digits than its factorization.

7680049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3267.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 7680049 is about 2771.2901327721. The cubic root of 7680049 is about 197.2973855441.

The spelling of 7680049 in words is "seven million, six hundred eighty thousand, forty-nine".

Divisors: 1 13 193 2509 3061 39793 590773 7680049