1028090 has 32 divisors (see below), whose sum is σ = 2229120. Its totient is φ = 333504.

The previous prime is 1028089. The next prime is 1028099. The reversal of 1028090 is 908201.

It is an Ulam number.

It is a zygodrome in base 4.

It is not an unprimeable number, because it can be changed into a prime (1028099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 944 + ... + 1716.

It is an arithmetic number, because the mean of its divisors is an integer number (69660).

2^1028090 is an apocalyptic number.

1028090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1028090 is an abundant number, since it is smaller than the sum of its proper divisors (1201030).

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

1028090 is a wasteful number, since it uses less digits than its factorization.

1028090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1028090 is about 1013.9477304082. The cubic root of 1028090 is about 100.9277004388.

It can be divided in two parts, 102 and 8090, that added together give a 13-th power (8192 = 2¹³).

The spelling of 1028090 in words is "one million, twenty-eight thousand, ninety".