1123506784 has 48 divisors (see below), whose sum is σ = 2366567280. Its totient is φ = 523445760.

The previous prime is 1123506779. The next prime is 1123506793. The reversal of 1123506784 is 4876053211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21942 + ... + 52234.

It is an arithmetic number, because the mean of its divisors is an integer number (49303485).

Almost surely, 2^1123506784 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 1123506784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1183283640).

1123506784 is an abundant number, since it is smaller than the sum of its proper divisors (1243060496).

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

1123506784 is a wasteful number, since it uses less digits than its factorization.

1123506784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30383 (or 30375 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 1123506784 is about 33518.7527214245. The cubic root of 1123506784 is about 1039.5815575011.

Adding to 1123506784 its reverse (4876053211), we get a palindrome (5999559995).

The spelling of 1123506784 in words is "one billion, one hundred twenty-three million, five hundred six thousand, seven hundred eighty-four".