1928145 has 16 divisors (see below), whose sum is σ = 3105792. Its totient is φ = 1021440.

The previous prime is 1928141. The next prime is 1928161. The reversal of 1928145 is 5418291.

It is a happy number.

It is not a de Polignac number, because 1928145 - 2² = 1928141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1928141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2529 + ... + 3201.

It is an arithmetic number, because the mean of its divisors is an integer number (194112).

2^1928145 is an apocalyptic number.

1928145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1928145 is a deficient number, since it is larger than the sum of its proper divisors (1177647).

1928145 is a wasteful number, since it uses less digits than its factorization.

1928145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872.

The product of its digits is 2880, while the sum is 30.

The square root of 1928145 is about 1388.5766093378. The cubic root of 1928145 is about 124.4648051353.

The spelling of 1928145 in words is "one million, nine hundred twenty-eight thousand, one hundred forty-five".