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40345 = 58069
BaseRepresentation
bin1001110110011001
32001100021
421312121
52242340
6510441
7225424
oct116631
961307
1040345
1128348
121b421
1315496
14109bb
15be4a
hex9d99

40345 has 4 divisors (see below), whose sum is σ = 48420. Its totient is φ = 32272.

The previous prime is 40343. The next prime is 40351. The reversal of 40345 is 54304.

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 4624 + 35721 = 68^2 + 189^2 .

It is a cyclic number.

It is not a de Polignac number, because 40345 - 21 = 40343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4030 + ... + 4039.

It is an arithmetic number, because the mean of its divisors is an integer number (12105).

240345 is an apocalyptic number.

It is an amenable number.

40345 is a deficient number, since it is larger than the sum of its proper divisors (8075).

40345 is an equidigital number, since it uses as much as digits as its factorization.

40345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8074.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 40345 is about 200.8606482116. The cubic root of 40345 is about 34.2975612168.

Adding to 40345 its reverse (54304), we get a palindrome (94649).

The spelling of 40345 in words is "forty thousand, three hundred forty-five".

Divisors: 1 5 8069 40345