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6380431 = 18135251
BaseRepresentation
bin11000010101101110001111
3110000011022021
4120111232033
53113133211
6344431011
7105142561
oct30255617
913004267
106380431
113668792
122178467
131425205
14bc1331
15860771
hex615b8f

6380431 has 4 divisors (see below), whose sum is σ = 6415864. Its totient is φ = 6345000.

The previous prime is 6380401. The next prime is 6380443. The reversal of 6380431 is 1340836.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6380431 - 217 = 6249359 is a prime.

It is a super-2 number, since 2×63804312 = 81419799491522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6380396 and 6380405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6380401) 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, 17445 + ... + 17806.

It is an arithmetic number, because the mean of its divisors is an integer number (1603966).

Almost surely, 26380431 is an apocalyptic number.

6380431 is a deficient number, since it is larger than the sum of its proper divisors (35433).

6380431 is a wasteful number, since it uses less digits than its factorization.

6380431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35432.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 6380431 is about 2525.9515038892. The cubic root of 6380431 is about 185.4741283729.

The spelling of 6380431 in words is "six million, three hundred eighty thousand, four hundred thirty-one".

Divisors: 1 181 35251 6380431