1028538398 has 12 divisors (see below), whose sum is σ = 1592966688. Its totient is φ = 497557680.

The previous prime is 1028538397. The next prime is 1028538421. The reversal of 1028538398 is 8938358201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028538397) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 250490 + ... + 254562.

It is an arithmetic number, because the mean of its divisors is an integer number (132747224).

Almost surely, 2^1028538398 is an apocalyptic number.

1028538398 is a deficient number, since it is larger than the sum of its proper divisors (564428290).

1028538398 is an frugal number, since it uses more digits than its factorization.

1028538398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8179 (or 4106 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 1028538398 is about 32070.8340708501. The cubic root of 1028538398 is about 1009.4237139861.

The spelling of 1028538398 in words is "one billion, twenty-eight million, five hundred thirty-eight thousand, three hundred ninety-eight".