1028180 has 24 divisors (see below), whose sum is σ = 2184840. Its totient is φ = 406400.

The previous prime is 1028149. The next prime is 1028189. The reversal of 1028180 is 818201.

1028180 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 512656 + 515524 = 716^2 + 718^2 .

It is a super-2 number, since 2×1028180² = 2114308224800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1766 + ... + 2274.

It is an arithmetic number, because the mean of its divisors is an integer number (91035).

2^1028180 is an apocalyptic number.

1028180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1028180 is an abundant number, since it is smaller than the sum of its proper divisors (1156660).

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

1028180 is a wasteful number, since it uses less digits than its factorization.

1028180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619 (or 617 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 1028180 is about 1013.9921104230. The cubic root of 1028180 is about 100.9306454559.

The spelling of 1028180 in words is "one million, twenty-eight thousand, one hundred eighty".