1028125 has 24 divisors (see below), whose sum is σ = 1499904. Its totient is φ = 690000.

The previous prime is 1028117. The next prime is 1028129. The reversal of 1028125 is 5218201.

It is not a de Polignac number, because 1028125 - 2³ = 1028117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21852 + ... + 21898.

It is an arithmetic number, because the mean of its divisors is an integer number (62496).

2^1028125 is an apocalyptic number.

It is an amenable number.

1028125 is a deficient number, since it is larger than the sum of its proper divisors (471779).

1028125 is an frugal number, since it uses more digits than its factorization.

1028125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 1028125 is about 1013.9649895337. The cubic root of 1028125 is about 100.9288457437.

Multiplying 1028125 by its sum of digits (19), we get a triangular number (19534375 = T₆₂₅₀).

The spelling of 1028125 in words is "one million, twenty-eight thousand, one hundred twenty-five".