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8345389 = 1321923113
BaseRepresentation
bin11111110101011100101101
3120200222201111
4133311130231
54114023024
6454512021
7130635403
oct37653455
916628644
108345389
114790018
122965611
131962700
141173473
15aeca94
hex7f572d

8345389 has 24 divisors (see below), whose sum is σ = 10013760. Its totient is φ = 6918912.

The previous prime is 8345377. The next prime is 8345399. The reversal of 8345389 is 9835438.

It is not a de Polignac number, because 8345389 - 25 = 8345357 is a prime.

It is a super-2 number, since 2×83453892 = 139291035122642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8345339) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73797 + ... + 73909.

It is an arithmetic number, because the mean of its divisors is an integer number (417240).

Almost surely, 28345389 is an apocalyptic number.

It is an amenable number.

8345389 is a deficient number, since it is larger than the sum of its proper divisors (1668371).

8345389 is a wasteful number, since it uses less digits than its factorization.

8345389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 168 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 8345389 is about 2888.8386940084. The cubic root of 8345389 is about 202.8377860778.

The spelling of 8345389 in words is "eight million, three hundred forty-five thousand, three hundred eighty-nine".

Divisors: 1 13 19 23 113 169 247 299 437 1469 2147 2599 3211 3887 5681 19097 27911 33787 49381 73853 362843 439231 641953 8345389