1919028 has 48 divisors (see below), whose sum is σ = 4959360. Its totient is φ = 574464.

The previous prime is 1919009. The next prime is 1919039. The reversal of 1919028 is 8209191.

It is a junction number, because it is equal to n+sod(n) for n = 1918986 and 1919004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4488 + ... + 4896.

It is an arithmetic number, because the mean of its divisors is an integer number (103320).

2^1919028 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 1919028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2479680).

1919028 is an abundant number, since it is smaller than the sum of its proper divisors (3040332).

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

1919028 is a wasteful number, since it uses less digits than its factorization.

1919028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 1919028 is about 1385.2898613648. The cubic root of 1919028 is about 124.2683228784.

The spelling of 1919028 in words is "one million, nine hundred nineteen thousand, twenty-eight".