1028442445 has 4 divisors (see below), whose sum is σ = 1234130940. Its totient is φ = 822753952.

The previous prime is 1028442439. The next prime is 1028442451. The reversal of 1028442445 is 5442448201.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1028442439) and next prime (1028442451).

It can be written as a sum of positive squares in 2 ways, for example, as 598585156 + 429857289 = 24466^2 + 20733^2 .

It is a cyclic number.

It is not a de Polignac number, because 1028442445 - 2⁵ = 1028442413 is a prime.

It is a super-3 number, since 3×1028442445³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1028442445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102844240 + ... + 102844249.

It is an arithmetic number, because the mean of its divisors is an integer number (308532735).

Almost surely, 2^1028442445 is an apocalyptic number.

It is an amenable number.

1028442445 is a deficient number, since it is larger than the sum of its proper divisors (205688495).

1028442445 is an equidigital number, since it uses as much as digits as its factorization.

1028442445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205688494.

The product of its (nonzero) digits is 40960, while the sum is 34.

The square root of 1028442445 is about 32069.3380817254. The cubic root of 1028442445 is about 1009.3923230835.

The spelling of 1028442445 in words is "one billion, twenty-eight million, four hundred forty-two thousand, four hundred forty-five".