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169420 = 22543197
BaseRepresentation
bin101001010111001100
322121101211
4221113030
520410140
63344204
71303636
oct512714
9277354
10169420
11106319
1282064
135c164
1445a56
15352ea
hex295cc

169420 has 24 divisors (see below), whose sum is σ = 365904. Its totient is φ = 65856.

The previous prime is 169409. The next prime is 169427. The reversal of 169420 is 24961.

169420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 169391 and 169400.

It is not an unprimeable number, because it can be changed into a prime (169427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 762 + ... + 958.

It is an arithmetic number, because the mean of its divisors is an integer number (15246).

2169420 is an apocalyptic number.

169420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 169420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182952).

169420 is an abundant number, since it is smaller than the sum of its proper divisors (196484).

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

169420 is a wasteful number, since it uses less digits than its factorization.

169420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 169420 is about 411.6066083046. The cubic root of 169420 is about 55.3335107493. Note that the first 3 decimals are identical.

The spelling of 169420 in words is "one hundred sixty-nine thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 43 86 172 197 215 394 430 788 860 985 1970 3940 8471 16942 33884 42355 84710 169420