1128353408 has 128 divisors (see below), whose sum is σ = 2806648320. Its totient is φ = 439934976.

The previous prime is 1128353381. The next prime is 1128353441. The reversal of 1128353408 is 8043538211.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 849641 + ... + 850967.

It is an arithmetic number, because the mean of its divisors is an integer number (21926940).

Almost surely, 2^1128353408 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 1128353408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1403324160).

1128353408 is an abundant number, since it is smaller than the sum of its proper divisors (1678294912).

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

1128353408 is a wasteful number, since it uses less digits than its factorization.

1128353408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434 (or 1422 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 1128353408 is about 33590.9721204969. The cubic root of 1128353408 is about 1041.0742745546.

The spelling of 1128353408 in words is "one billion, one hundred twenty-eight million, three hundred fifty-three thousand, four hundred eight".