1028398906248 has 32 divisors (see below), whose sum is σ = 2938282589760. Its totient is φ = 293828258880.

The previous prime is 1028398906247. The next prime is 1028398906291. The reversal of 1028398906248 is 8426098938201.

It is a junction number, because it is equal to n+sod(n) for n = 1028398906191 and 1028398906200.

It is not an unprimeable number, because it can be changed into a prime (1028398906247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3060710863 + ... + 3060711198.

It is an arithmetic number, because the mean of its divisors is an integer number (91821330930).

Almost surely, 2^{1028398906248} is an apocalyptic number.

It is an amenable number.

1028398906248 is an abundant number, since it is smaller than the sum of its proper divisors (1909883683512).

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

1028398906248 is a wasteful number, since it uses less digits than its factorization.

1028398906248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6121422077 (or 6121422073 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 60.

The spelling of 1028398906248 in words is "one trillion, twenty-eight billion, three hundred ninety-eight million, nine hundred six thousand, two hundred forty-eight".