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19422 = 2321383
BaseRepresentation
bin100101111011110
3222122100
410233132
51110142
6225530
7110424
oct45736
928570
1019422
1113657
12b2a6
138ac0
147114
155b4c
hex4bde

19422 has 24 divisors (see below), whose sum is σ = 45864. Its totient is φ = 5904.

The previous prime is 19421. The next prime is 19423. The reversal of 19422 is 22491.

It is an interprime number because it is at equal distance from previous prime (19421) and next prime (19423).

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

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 19395 and 19404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19421) 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, 193 + ... + 275.

It is an arithmetic number, because the mean of its divisors is an integer number (1911).

219422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22932).

19422 is an abundant number, since it is smaller than the sum of its proper divisors (26442).

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

19422 is a wasteful number, since it uses less digits than its factorization.

19422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 101 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 19422 is about 139.3628357920. The cubic root of 19422 is about 26.8801270190.

It can be divided in two parts, 194 and 22, that added together give a cube (216 = 63).

The spelling of 19422 in words is "nineteen thousand, four hundred twenty-two".

Divisors: 1 2 3 6 9 13 18 26 39 78 83 117 166 234 249 498 747 1079 1494 2158 3237 6474 9711 19422