1028590000 has 50 divisors (see below), whose sum is σ = 2490343460. Its totient is φ = 411432000.

The previous prime is 1028589997. The next prime is 1028590007. The reversal of 1028590000 is 958201.

1028590000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (50).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (1028590007) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 41430 + ... + 61429.

Almost surely, 2^1028590000 is an apocalyptic number.

1028590000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1028590000 is an abundant number, since it is smaller than the sum of its proper divisors (1461753460).

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

1028590000 is an equidigital number, since it uses as much as digits as its factorization.

1028590000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102887 (or 102866 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1028590000 is about 32071.6385611961. The cubic root of 1028590000 is about 1009.4405947078.

The spelling of 1028590000 in words is "one billion, twenty-eight million, five hundred ninety thousand".