19822 has 16 divisors (see below), whose sum is σ = 34992. Its totient is φ = 8320.

The previous prime is 19819. The next prime is 19841. The reversal of 19822 is 22891.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 19793 and 19802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348 + ... + 400.

It is an arithmetic number, because the mean of its divisors is an integer number (2187).

2¹⁹⁸²² is an apocalyptic number.

19822 is a deficient number, since it is larger than the sum of its proper divisors (15170).

19822 is a wasteful number, since it uses less digits than its factorization.

19822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83.

The product of its digits is 288, while the sum is 22.

The square root of 19822 is about 140.7906246879. The cubic root of 19822 is about 27.0634083561.

It can be divided in two parts, 198 and 22, that multiplied together give a square (4356 = 66²).

The spelling of 19822 in words is "nineteen thousand, eight hundred twenty-two".