1928225 has 24 divisors (see below), whose sum is σ = 2734200. Its totient is φ = 1336320.

The previous prime is 1928219. The next prime is 1928237. The reversal of 1928225 is 5228291.

It can be written as a sum of positive squares in 12 ways, for example, as 380689 + 1547536 = 617^2 + 1244^2 .

It is not a de Polignac number, because 1928225 - 2⁶ = 1928161 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5351 + ... + 5699.

It is an arithmetic number, because the mean of its divisors is an integer number (113925).

2^1928225 is an apocalyptic number.

It is an amenable number.

1928225 is a deficient number, since it is larger than the sum of its proper divisors (805975).

1928225 is a wasteful number, since it uses less digits than its factorization.

1928225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 384 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 1928225 is about 1388.6054155159. The cubic root of 1928225 is about 124.4665264870.

The spelling of 1928225 in words is "one million, nine hundred twenty-eight thousand, two hundred twenty-five".