19244000 has 96 divisors (see below), whose sum is σ = 50240736. Its totient is φ = 7219200.

The previous prime is 19243999. The next prime is 19244003. The reversal of 19244000 is 44291.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19244003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67859 + ... + 68141.

It is an arithmetic number, because the mean of its divisors is an integer number (523341).

Almost surely, 2^19244000 is an apocalyptic number.

19244000 is a gapful number since it is divisible by the number (10) 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 19244000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25120368).

19244000 is an abundant number, since it is smaller than the sum of its proper divisors (30996736).

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

19244000 is a wasteful number, since it uses less digits than its factorization.

19244000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 19244000 is about 4386.7983769487. The cubic root of 19244000 is about 267.9775729358.

Adding to 19244000 its reverse (44291), we get a palindrome (19288291).

The spelling of 19244000 in words is "nineteen million, two hundred forty-four thousand".