1103128392 has 96 divisors (see below), whose sum is σ = 2941151040. Its totient is φ = 344044800.

The previous prime is 1103128373. The next prime is 1103128423. The reversal of 1103128392 is 2938213011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6094542 + ... + 6094722.

It is an arithmetic number, because the mean of its divisors is an integer number (30636990).

Almost surely, 2^1103128392 is an apocalyptic number.

1103128392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1103128392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1470575520).

1103128392 is an abundant number, since it is smaller than the sum of its proper divisors (1838022648).

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

1103128392 is a wasteful number, since it uses less digits than its factorization.

1103128392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1103128392 is about 33213.3767027684. The cubic root of 1103128392 is about 1033.2577882568.

The spelling of 1103128392 in words is "one billion, one hundred three million, one hundred twenty-eight thousand, three hundred ninety-two".