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169393 = 723457
BaseRepresentation
bin101001010110110001
322121100211
4221112301
520410033
63344121
71303600
oct512661
9277324
10169393
111062a4
1282041
135c143
1445a37
15352cd
hex295b1

169393 has 6 divisors (see below), whose sum is σ = 197106. Its totient is φ = 145152.

The previous prime is 169373. The next prime is 169399. The reversal of 169393 is 393961.

169393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 94864 + 74529 = 308^2 + 273^2 .

It is not a de Polignac number, because 169393 - 25 = 169361 is a prime.

169393 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (169399) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1680 + ... + 1777.

It is an arithmetic number, because the mean of its divisors is an integer number (32851).

2169393 is an apocalyptic number.

It is an amenable number.

169393 is a deficient number, since it is larger than the sum of its proper divisors (27713).

169393 is an equidigital number, since it uses as much as digits as its factorization.

169393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471 (or 3464 counting only the distinct ones).

The product of its digits is 4374, while the sum is 31.

The square root of 169393 is about 411.5738086905. The cubic root of 169393 is about 55.3305711432.

It can be divided in two parts, 16 and 9393, that added together give a square (9409 = 972).

The spelling of 169393 in words is "one hundred sixty-nine thousand, three hundred ninety-three".

Divisors: 1 7 49 3457 24199 169393