1098775328 has 48 divisors (see below), whose sum is σ = 2477087424. Its totient is φ = 469981440.

The previous prime is 1098775291. The next prime is 1098775351. The reversal of 1098775328 is 8235778901.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116651 + ... + 125717.

It is an arithmetic number, because the mean of its divisors is an integer number (51605988).

Almost surely, 2^1098775328 is an apocalyptic number.

It is an amenable number.

1098775328 is an abundant number, since it is smaller than the sum of its proper divisors (1378312096).

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

1098775328 is an equidigital number, since it uses as much as digits as its factorization.

1098775328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9625 (or 9617 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 50.

The square root of 1098775328 is about 33147.7801368357. The cubic root of 1098775328 is about 1031.8968809090.

The spelling of 1098775328 in words is "one billion, ninety-eight million, seven hundred seventy-five thousand, three hundred twenty-eight".