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307345 = 561469
BaseRepresentation
bin1001011000010010001
3120121121011
41023002101
534313340
610330521
72420023
oct1130221
9517534
10307345
1119aa05
12129a41
13a9b7c
1480013
15610ea
hex4b091

307345 has 4 divisors (see below), whose sum is σ = 368820. Its totient is φ = 245872.

The previous prime is 307339. The next prime is 307361. The reversal of 307345 is 543703.

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

It can be written as a sum of positive squares in 2 ways, for example, as 204304 + 103041 = 452^2 + 321^2 .

It is a cyclic number.

It is not a de Polignac number, because 307345 - 23 = 307337 is a prime.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30730 + ... + 30739.

It is an arithmetic number, because the mean of its divisors is an integer number (92205).

2307345 is an apocalyptic number.

It is an amenable number.

307345 is a deficient number, since it is larger than the sum of its proper divisors (61475).

307345 is an equidigital number, since it uses as much as digits as its factorization.

307345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61474.

The product of its (nonzero) digits is 1260, while the sum is 22.

The square root of 307345 is about 554.3870489108. The cubic root of 307345 is about 67.4852276772.

The spelling of 307345 in words is "three hundred seven thousand, three hundred forty-five".

Divisors: 1 5 61469 307345