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162090 = 23251801
BaseRepresentation
bin100111100100101010
322020100100
4213210222
520141330
63250230
71243365
oct474452
9266310
10162090
11100865
1279976
1358a16
14430dc
1533060
hex2792a

162090 has 24 divisors (see below), whose sum is σ = 421668. Its totient is φ = 43200.

The previous prime is 162079. The next prime is 162091. The reversal of 162090 is 90261.

162090 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 2 ways, for example, as 149769 + 12321 = 387^2 + 111^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 811 + ... + 990.

2162090 is an apocalyptic number.

162090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

162090 is an abundant number, since it is smaller than the sum of its proper divisors (259578).

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

162090 is a wasteful number, since it uses less digits than its factorization.

162090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814 (or 1811 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 162090 is about 402.6040238249. The cubic root of 162090 is about 54.5237110305.

The spelling of 162090 in words is "one hundred sixty-two thousand, ninety".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 1801 3602 5403 9005 10806 16209 18010 27015 32418 54030 81045 162090