19338228 has 72 divisors (see below), whose sum is σ = 60173568. Its totient is φ = 5099328.

The previous prime is 19338227. The next prime is 19338233. The reversal of 19338228 is 82283391.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 19338192 and 19338201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19338227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 325 + ... + 6227.

It is an arithmetic number, because the mean of its divisors is an integer number (835744).

Almost surely, 2^19338228 is an apocalyptic number.

19338228 is a gapful number since it is divisible by the number (18) 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 19338228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30086784).

19338228 is an abundant number, since it is smaller than the sum of its proper divisors (40835340).

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

19338228 is a wasteful number, since it uses less digits than its factorization.

19338228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5933 (or 5928 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 19338228 is about 4397.5252131170. The cubic root of 19338228 is about 268.4142439116.

The spelling of 19338228 in words is "nineteen million, three hundred thirty-eight thousand, two hundred twenty-eight".