1028690898 has 8 divisors (see below), whose sum is σ = 2057381808. Its totient is φ = 342896964.

The previous prime is 1028690863. The next prime is 1028690903. The reversal of 1028690898 is 8980968201.

1028690898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

1028690898 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1028690898.

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, 85724236 + ... + 85724247.

It is an arithmetic number, because the mean of its divisors is an integer number (257172726).

Almost surely, 2^1028690898 is an apocalyptic number.

1028690898 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1028690898 is a wasteful number, since it uses less digits than its factorization.

1028690898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171448488.

The product of its (nonzero) digits is 497664, while the sum is 51.

The square root of 1028690898 is about 32073.2115323676. The cubic root of 1028690898 is about 1009.4736001511.

The spelling of 1028690898 in words is "one billion, twenty-eight million, six hundred ninety thousand, eight hundred ninety-eight".