1028100490 has 8 divisors (see below), whose sum is σ = 1850580900. Its totient is φ = 411240192.

The previous prime is 1028100467. The next prime is 1028100497. The reversal of 1028100490 is 940018201.

It is a happy number.

1028100490 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 2 ways, for example, as 972254761 + 55845729 = 31181^2 + 7473^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1028100497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51405015 + ... + 51405034.

Almost surely, 2^1028100490 is an apocalyptic number.

1028100490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1028100490 is a deficient number, since it is larger than the sum of its proper divisors (822480410).

1028100490 is a wasteful number, since it uses less digits than its factorization.

1028100490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102810056.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1028100490 is about 32064.0061439615. The cubic root of 1028100490 is about 1009.2804370575.

Adding to 1028100490 its reverse (940018201), we get a palindrome (1968118691).

The spelling of 1028100490 in words is "one billion, twenty-eight million, one hundred thousand, four hundred ninety".