1098430128 has 60 divisors (see below), whose sum is σ = 3235880440. Its totient is φ = 346871808.

The previous prime is 1098430127. The next prime is 1098430133. The reversal of 1098430128 is 8210348901.

1098430128 is a `hidden beast` number, since 10 + 98 + 430 + 128 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1098430092 and 1098430101.

It is not an unprimeable number, because it can be changed into a prime (1098430127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 198001 + ... + 203472.

Almost surely, 2^1098430128 is an apocalyptic number.

1098430128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1098430128 is an abundant number, since it is smaller than the sum of its proper divisors (2137450312).

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

1098430128 is a wasteful number, since it uses less digits than its factorization.

1098430128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401506 (or 401497 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1098430128 is about 33142.5727426221. The cubic root of 1098430128 is about 1031.7888066121.

The spelling of 1098430128 in words is "one billion, ninety-eight million, four hundred thirty thousand, one hundred twenty-eight".