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345860 = 22517293
BaseRepresentation
bin1010100011100000100
3122120102122
41110130010
542031420
611225112
72640224
oct1243404
9576378
10345860
11216939
12148198
13c1568
1490084
156c725
hex54704

345860 has 12 divisors (see below), whose sum is σ = 726348. Its totient is φ = 138336.

The previous prime is 345853. The next prime is 345869. The reversal of 345860 is 68543.

It can be written as a sum of positive squares in 2 ways, for example, as 58564 + 287296 = 242^2 + 536^2 .

It is not an unprimeable number, because it can be changed into a prime (345869) by changing a digit.

345860 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 8627 + ... + 8666.

It is an arithmetic number, because the mean of its divisors is an integer number (60529).

2345860 is an apocalyptic number.

It is an amenable number.

345860 is an abundant number, since it is smaller than the sum of its proper divisors (380488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

345860 is a wasteful number, since it uses less digits than its factorization.

345860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17302 (or 17300 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 345860 is about 588.0986311836. The cubic root of 345860 is about 70.1940195607.

The spelling of 345860 in words is "three hundred forty-five thousand, eight hundred sixty".