1919424 has 56 divisors (see below), whose sum is σ = 5476240. Its totient is φ = 589824.

The previous prime is 1919387. The next prime is 1919429. The reversal of 1919424 is 4249191.

It is a junction number, because it is equal to n+sod(n) for n = 1919391 and 1919400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1919429) 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, 2112 + ... + 2880.

It is an arithmetic number, because the mean of its divisors is an integer number (97790).

2^1919424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1919424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2738120).

1919424 is an abundant number, since it is smaller than the sum of its proper divisors (3556816).

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

1919424 is a wasteful number, since it uses less digits than its factorization.

1919424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797 (or 787 counting only the distinct ones).

The product of its digits is 2592, while the sum is 30.

The square root of 1919424 is about 1385.4327843674. The cubic root of 1919424 is about 124.2768700650.

The spelling of 1919424 in words is "one million, nine hundred nineteen thousand, four hundred twenty-four".