1928444 has 18 divisors (see below), whose sum is σ = 3926160. Its totient is φ = 826392.

The previous prime is 1928419. The next prime is 1928447. The reversal of 1928444 is 4448291.

It is a super-2 number, since 2×1928444² = 7437792522272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1928444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1928447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4724 + ... + 5115.

It is an arithmetic number, because the mean of its divisors is an integer number (218120).

2^1928444 is an apocalyptic number.

1928444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1928444 is an abundant number, since it is smaller than the sum of its proper divisors (1997716).

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

1928444 is a wasteful number, since it uses less digits than its factorization.

1928444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9857 (or 9848 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 1928444 is about 1388.6842693716. The cubic root of 1928444 is about 124.4712384436.

The spelling of 1928444 in words is "one million, nine hundred twenty-eight thousand, four hundred forty-four".