1103269128 has 128 divisors (see below), whose sum is σ = 3186086400. Its totient is φ = 315334656.

The previous prime is 1103269109. The next prime is 1103269133. The reversal of 1103269128 is 8219623011.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 417700 + ... + 420332.

It is an arithmetic number, because the mean of its divisors is an integer number (24891300).

Almost surely, 2^1103269128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1103269128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1593043200).

1103269128 is an abundant number, since it is smaller than the sum of its proper divisors (2082817272).

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

1103269128 is a wasteful number, since it uses less digits than its factorization.

1103269128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751 (or 2747 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1103269128 is about 33215.4952996339. The cubic root of 1103269128 is about 1033.3017270481.

The spelling of 1103269128 in words is "one billion, one hundred three million, two hundred sixty-nine thousand, one hundred twenty-eight".