1928925 has 18 divisors (see below), whose sum is σ = 3455322. Its totient is φ = 1028640.

The previous prime is 1928873. The next prime is 1928929. The reversal of 1928925 is 5298291.

It can be written as a sum of positive squares in 3 ways, for example, as 49284 + 1879641 = 222^2 + 1371^2 .

It is not a de Polignac number, because 1928925 - 2¹⁰ = 1927901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1928925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1928929) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4062 + ... + 4511.

2^1928925 is an apocalyptic number.

1928925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1928925 is a deficient number, since it is larger than the sum of its proper divisors (1526397).

1928925 is a wasteful number, since it uses less digits than its factorization.

1928925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8589 (or 8581 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 1928925 is about 1388.8574440885. The cubic root of 1928925 is about 124.4815862833.

The spelling of 1928925 in words is "one million, nine hundred twenty-eight thousand, nine hundred twenty-five".