1128663480 has 128 divisors (see below), whose sum is σ = 3933319680. Its totient is φ = 253739520.

The previous prime is 1128663463. The next prime is 1128663509. The reversal of 1128663480 is 843668211.

It is a congruent number.

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, 40227 + ... + 62253.

It is an arithmetic number, because the mean of its divisors is an integer number (30729060).

Almost surely, 2^1128663480 is an apocalyptic number.

1128663480 is a gapful number since it is divisible by the number (10) 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 1128663480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1966659840).

1128663480 is an abundant number, since it is smaller than the sum of its proper divisors (2804656200).

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

1128663480 is a wasteful number, since it uses less digits than its factorization.

1128663480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22109 (or 22105 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 1128663480 is about 33595.5872102275. The cubic root of 1128663480 is about 1041.1696283730.

The spelling of 1128663480 in words is "one billion, one hundred twenty-eight million, six hundred sixty-three thousand, four hundred eighty".