Search a number
22190 = 257317
BaseRepresentation
bin101011010101110
31010102212
411122232
51202230
6250422
7121460
oct53256
933385
1022190
1115743
1210a12
13a13c
148130
156895
hex56ae

22190 has 16 divisors (see below), whose sum is σ = 45792. Its totient is φ = 7584.

The previous prime is 22189. The next prime is 22193. The reversal of 22190 is 9122.

22190 = 852 + 862 + 872.

It is a super-2 number, since 2×221902 = 984792200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22193) 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, 89 + ... + 228.

It is an arithmetic number, because the mean of its divisors is an integer number (2862).

222190 is an apocalyptic number.

22190 is an abundant number, since it is smaller than the sum of its proper divisors (23602).

It is a weird number, because it is abundant, but not a pseudoperfect number.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22896).

22190 is a wasteful number, since it uses less digits than its factorization.

22190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 22190 is about 148.9630826749. The cubic root of 22190 is about 28.1008269662.

It can be divided in two parts, 22 and 190, that added together give a palindrome (212).

The spelling of 22190 in words is "twenty-two thousand, one hundred ninety".